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A flat tax (short for flat-rate tax) is a tax with a single rate on the taxable amount, after accounting for any deductions or exemptions from the tax base. It is not necessarily a fully proportional tax. Implementations are often progressive due to exemptions, or regressive in case of a maximum taxable amount. There are various tax systems that are labeled "flat tax" even though they are significantly different. The defining characteristic is the existence of only one tax rate other than zero, as opposed to multiple non-zero rates that vary depending on the amount subject to taxation.

A flat tax system is usually discussed in the context of an income tax, where progressivity is common, but it may also apply to taxes on consumption, property or transfers.

Major categories

Flat tax proposals differ in how the subject of the tax is defined.

True flat-rate income tax

A true flat-rate tax is a system of taxation where one tax rate is applied to all personal income with no deductions.

Marginal flat tax

Where deductions are allowed, a 'flat tax' is a progressive tax with the special characteristic that, above the maximum deduction, the marginal rate on all further income is constant. Such a tax is said to be marginally flat above that point. The difference between a true flat tax and a marginally flat tax can be reconciled by recognizing that the latter simply excludes certain types of income from being defined as taxable income; hence, both kinds of tax are flat on taxable income.

Flat tax with limited deductions

Modified flat taxes have been proposed which would allow deductions for a very few items, while still eliminating the vast majority of existing deductions. Charitable deductions and home mortgage interest are the most discussed examples of deductions that would be retained, as these deductions are popular with voters and are often used. Another common theme is a single, large, fixed deduction. This large fixed deduction would compensate for the elimination of various existing deductions and would simplify taxes, having the side-effect that many (mostly low income) households will not have to file tax returns.

Hall–Rabushka flat tax

Designed by economists at the Hoover Institution, Hall–Rabushka is a flat tax on consumption. Principally, Hall–Rabushka accomplishes a consumption tax effect by taxing income and then excluding investment. Robert Hall and Alvin Rabushka have consulted extensively in designing the flat tax systems in Eastern Europe.

Negative income tax

The negative income tax (NIT), which Milton Friedman proposed in his 1962 book Capitalism and Freedom, is a type of flat tax. The basic idea is the same as a flat tax with personal deductions, except that when deductions exceed income, the taxable income is allowed to become negative rather than being set to zero. The flat tax rate is then applied to the resulting "negative income," resulting in a "negative income tax" that the government would owe to the household—unlike the usual "positive" income tax, which the household owes the government.

For example, let the flat rate be 20%, and let the deductions be $20,000 per adult and $7,000 per dependent. Under such a system, a family of four making $54,000 a year would owe no tax. A family of four making $74,000 a year would owe tax amounting to 0.20 × (74,000 − 54,000) = $4,000, as would be the case under a flat tax system with deductions. Families of four earning less than $54,000 per year, however, would experience a "negative" amount of tax (that is, the family would receive money from the government instead of paying to the government). For example, if the family earned $34,000 a year, it would receive a check for $4,000. The NIT is intended to replace not just the USA's income tax, but also many benefits low income American households receive, such as food stamps and Medicaid. The NIT is designed to avoid the welfare trap—effective high marginal tax rates arising from the rules reducing benefits as market income rises. An objection to the NIT is that it is welfare without a work requirement. Those who would owe negative tax would be receiving a form of welfare without having to make an effort to obtain employment. Another objection is that the NIT subsidizes industries employing low-cost labor, but this objection can also be made against current systems of benefits for the working poor.

Capped flat tax

A capped flat tax is one in which income is taxed at a flat rate until a specified cap amount is reached. For example, the United States Federal Insurance Contributions Act tax is 6.2% of gross compensation up to a limit (in 2019, up to $132,900 of earnings, for a maximum tax of $8239.80). This cap has the effect of turning a nominally flat tax into a regressive tax.

Requirements for a fully defined schema

In devising a flat tax system, several recurring issues must be enumerated, principally with deductions and the identification of when money is earned.

Defining when income occurs

Since a central tenet of the flat tax is to minimize the compartmentalization of incomes into myriad special or sheltered cases, a vexing problem is deciding when income occurs. This is demonstrated by the taxation of interest income and stock dividends. The shareholders own the company and so the company's profits belong to them. If a company is taxed on its profits, then the funds paid out as dividends have already been taxed. It's a debatable question if they should subsequently be treated as income to the shareholders and thus subject to further tax. A similar issue arises in deciding if interest paid on loans should be deductible from the taxable income since that interest is in-turn taxed as income to the loan provider. There is no universally agreed answer to what is fair. For example, in the United States, dividends are not deductible but mortgage interest is deductible. Thus a Flat Tax proposal is not fully defined until it differentiates new untaxed income from a pass-through of already taxed income.

Policy administration

Taxes, in addition to providing revenue, can be potent instruments of policy. For example, it is common for governments to encourage social policy such as home insulation or low income housing with tax credits rather than constituting a ministry to implement these policies. In a flat tax system with limited deductions such policy administration, mechanisms are curtailed. In addition to social policy, flat taxes can remove tools for adjusting economic policy as well. For example, in the United States, short-term capital gains are taxed at a higher rate than long-term gains as means to promote long-term investment horizons and damp speculative fluctuation. Thus, if one assumes that government should be active in policy decisions such as this, then claims that flat taxes are cheaper/simpler to administer than others are incomplete until they factor in costs for alternative policy administration.

Minimizing deductions

In general, the question of how to eliminate deductions is fundamental to the flat tax design; deductions dramatically affect the effective "flatness" in the tax rate. Perhaps the single biggest necessary deduction is for business expenses. If businesses were not allowed to deduct expenses, businesses with a profit margin below the flat tax rate could never earn any money since the tax on revenues would always exceed the earnings. For example, grocery stores typically earn pennies on every dollar of revenue; they could not pay a tax rate of 25% on revenues unless their markup exceeded 25%. Thus, corporations must be able to deduct operating expenses even if individual citizens cannot. A practical dilemma now arises as to identifying what is an expense for a business. For example, if a peanut butter producer purchases a jar manufacturer, is that an expense (since they have to purchase jars somehow) or a sheltering of their income through investment? Flat tax systems can differ greatly in how they accommodate such gray areas. For example, the "9-9-9" flat tax proposal would allow businesses to deduct purchases but not labor costs. (This effectively taxes labor-intensive industrial revenue at a higher rate.) How deductions are implemented will dramatically change the effective total tax, and thus the flatness of the tax. Thus, a flat tax proposal is not fully defined unless the proposal includes a differentiation between deductible and non-deductible expenses.

Tax effects

Diminishing marginal utility

Flat tax benefits higher income brackets progressively due to decline in marginal value. For example, if a flat tax system has a large per-citizen deductible (such as the "Armey" scheme below), then it is a progressive tax. As a result, the term Flat Tax is actually a shorthand for the more proper marginally flat tax.

Administration and enforcement

One type of flat tax would be imposed on all income once; at the source of the income. Hall and Rabushka (1995) includes a proposed amendment to the U.S. Internal Revenue Code that would implement the variant of the flat tax they advocate. This amendment, only a few pages long, would replace hundreds of pages of statutory language (although most statutory language in taxation statutes is not directed at specifying graduated tax rates).

As it now stands, the U.S. Internal Revenue Code is over several million words long, and contains many loopholes, deductions, and exemptions which, advocates of flat taxes claim, render the collection of taxes and the enforcement of tax law complicated and inefficient.

It is further argued that current tax law slows economic growth by distorting economic incentives, and by allowing, even encouraging, tax avoidance. With a flat tax, there are fewer incentives than in the current system to create tax shelters, and to engage in other forms of tax avoidance.

Flat tax critics contend that a flat tax system could be created with many loopholes, or a progressive tax system without loopholes, and that a progressive tax system could be as simple, or simpler, than a flat tax system. A simple progressive tax would also discourage tax avoidance.

Under a pure flat tax without deductions, every tax period a company would make a single payment to the government covering the taxes on the employees and the taxes on the company profit. For example, suppose that in a given year, a company called ACME earns a profit of 3 million, spends 2 million in wages, and spends 1 million on other expenses that under the tax law is taxable income to recipients, such as the receipt of stock options, bonuses, and certain executive privileges. Given a flat rate of 15%, ACME would then owe the U.S. Internal Revenue Service (IRS) (3M + 2M + 1M) × 0.15 = 900,000. This payment would, in one fell swoop, settle the tax liabilities of ACME's employees as well as the corporate taxes owed by ACME. Most employees throughout the economy would never need to interact with the IRS, as all tax owed on wages, interest, dividends, royalties, etc. would be withheld at the source. The main exceptions would be employees with incomes from personal ventures. The Economist claims that such a system would reduce the number of entities required to file returns from about 130 million individuals, households, and businesses, as at present, to a mere 8 million businesses and self-employed.

However, this simplicity depends on the absence of deductions of any kind being allowed (or at least no variability in the deductions of different people). Furthermore, if income of differing types are segregated (e.g., pass-through, long term cap gains, regular income, etc.) then complications ensue. For example, if realized capital gains were subject to the flat tax, the law would require brokers and mutual funds to calculate the realized capital gain on all sales and redemption. If there were a gain, a tax equal to 15% of the amount of the gain would be withheld and sent to the IRS. If there were a loss, the amount would be reported to the IRS. The loss would offset gains, and then the IRS would settle up with taxpayers at the end of the period. Lacking deductions, this scheme cannot be used to implement economic and social policy indirectly by tax credits and thus, as noted above, the simplifications to the government's revenue collection apparatus might be offset by new government ministries required to administer those policies.

Revenues

The Russian Federation is considered a prime case of the success of a flat tax; the real revenues from its Personal Income Tax rose by 25.2% in the first year after the Federation introduced a flat tax, followed by a 24.6% increase in the second year, and a 15.2% increase in the third year.

The Russian example is often used as proof of the validity of this analysis, despite an International Monetary Fund study in 2006 which found that there was no sign "of Laffer-type behavioral responses generating revenue increases from the tax cut elements of these reforms" in Russia or in other countries.

Overall structure

Taxes other than the income tax (for example, taxes on sales and payrolls) tend to be regressive. Under such a structure, those with lower incomes tend to pay a higher proportion of their income in total taxes than the affluent do. The fraction of household income that is a return to capital (dividends, interest, royalties, profits of unincorporated businesses) is positively correlated with total household income. Hence a flat tax limited to wages would seem to leave the wealthy better off. Modifying the tax base can change the effects. A flat tax could be targeted at income (rather than wages), which could place the tax burden equally on all earners, including those who earn income primarily from returns on investment. Tax systems could utilize a flat sales tax to target all consumption, which can be modified with rebates or exemptions to remove regressive effects (such as the proposed Fair Tax in the U.S.).

Border adjustable

A flat tax system and income taxes overall are not inherently border-adjustable; meaning the tax component embedded into products via taxes imposed on companies (including corporate taxes and payroll taxes) are not removed when exported to a foreign country (see Effect of taxes and subsidies on price). Taxation systems such as a sales tax or value added tax can remove the tax component when goods are exported and apply the tax component on imports. The domestic products could be at a disadvantage to foreign products (at home and abroad) that are border-adjustable, which would impact the global competitiveness of a country. However, it's possible that a flat tax system could be combined with tariffs and credits to act as border adjustments (the proposed Border Tax Equity Act in the U.S. attempts this). Implementing an income tax with a border adjustment tax credit is a violation of the World Trade Organization agreement. Tax exemptions (allowances) on low income wages, a component of most income tax systems could mitigate this issue for high labour content industries like textiles that compete Globally.

In a subsequent section, various proposals for flat tax-like schemes are discussed, these differ mainly on how they approach with the following issues of deductions, defining income, and policy implementation.

Around the world

Most countries tax personal income at the national level using progressive rates, but some use a flat rate. Most countries that have or had a flat tax on personal income at the national level are former communist countries or islands.

In some countries, subdivisions are allowed to tax personal income in addition to the national government. Many of these subdivisions use a flat rate, even if their national government uses progressive rates. Examples are all counties and municipalities of the Nordic countries, all prefectures and municipalities of Japan, and some subdivisions of Italy and of the United States.

Jurisdictions that have a flat tax on personal income

The table below lists jurisdictions where the personal income tax imposed by all levels of government is a flat rate. It includes independent countries and other autonomous jurisdictions. The tax rate listed is the one that applies to income from work, but does not include mandatory contributions to social security. In some jurisdictions, different rates (also flat) apply to other types of income, such as from investments.

Jurisdiction Tax rate  Abkhazia 10%  Armenia 22%  Artsakh 21%  Belarus 13%  Belize 25%  Bolivia 13%  Bosnia and Herzegovina 10%  Bulgaria 10%  East Timor 10%  Estonia 20%  Georgia 20%  Greenland 36, 42 or 44%  Guernsey 20%  Hungary 15%  Jersey 20%  Kazakhstan 10%  Kurdistan 5%  Kyrgyzstan 10%  Madagascar 20%  Moldova 12%  Mongolia 10%  Nauru 10%  North Macedonia 10%  Romania 10%  South Ossetia 12%  Transnistria 10%  Turkmenistan 10%  Ukraine 19.5%  Uzbekistan 12%

The national government does not tax income, but all three subdivisions (Federation of Bosnia and Herzegovina, Republika Srpska and Brčko District) tax income using the same flat rate. The national government imposes an income tax rate of 10%. Residents of a municipality also pay a joint municipal tax of 6% (collected by the national government and distributed to the municipality) and a municipal tax of 26% or 28% (depending on the municipality), for a total income tax rate of 42 or 44%. Residents of an unincorporated area pay an additional tax of 26% (set by the national government for the area), for a total income tax rate of 36%. Applies to Guernsey and Alderney. Sark does not tax income, but taxes assets at a flat rate with minimum and maximum amounts. The autonomous region of Kurdistan taxes personal income at a flat rate instead of the progressive rates set by the federal government of Iraq. Composed of a regular tax rate of 18% and a military tax of 1.5%.

Subnational jurisdictions

The table below lists subnational jurisdictions that tax personal income at a flat rate, in addition to the progressive rates used by their national government. The tax rates listed are those that apply to income from work, except as otherwise noted. Where a range of rates is listed, it means that the flat rate varies by location, not progressive rates.

Country or territory Subnational jurisdictions Tax rate Subnational jurisdictions Tax rate  Denmark all municipalities 22.8 to 26.3%  Faroe Islands all municipalities 16 to 22%  Finland all municipalities 16.5 to 23.5%  Iceland all municipalities 12.44 to 14.52%  Italy  Abruzzo 1.73% some municipalities 0.2 to 0.8%  Aosta Valley 1.23%  Calabria 1.73% some municipalities 0.4 to 0.8%  Campania 2.03% some municipalities 0.2 to 0.8%  Sardinia 1.23% some municipalities 0.08 to 0.6%  Sicily 1.23% some municipalities 0.5 to 0.8%  Veneto 1.23% some municipalities 0.2 to 0.8% other regions progressive some municipalities 0.1 to 0.8%  Japan all prefectures 4% all municipalities 6%  Norway all counties 2.7% all municipalities 12.15%  Sweden Gotland County Gotland Municipality 33.6% other counties 10.83 to 12.08% all municipalities 17 to 23.8%   Switzerland  Obwalden 6.03% all municipalities 6.768 to 9%  Uri 7.1% all municipalities 6.39 to 8.52%  United Kingdom  Wales 10%  United States  Alabama progressive Macon County 1% some municipalities 0.5 to 3%  Colorado 4.55%  Delaware progressive Wilmington 1.25%  Illinois 4.95%  Indiana 3.23% all counties 0.5 to 2.9%  Kansas progressive some counties 0.75% some municipalities 0.125 to 2.25%  Kentucky 5% most counties 0.45 to 2% some municipalities 0.5 to 2.5% some school districts 0.5 to 0.75%  Maryland progressive all counties 2.25 to 3.2%  Massachusetts 5%  Michigan 4.25% some municipalities 1 to 2.4%  Missouri progressive Kansas City 1% Saint Louis 1%  New Hampshire 5%  North Carolina 4.99%  Ohio progressive most municipalities 0.5 to 3% some school districts 0.25 to 2%  Pennsylvania 3.07% most municipalities 0.312 to 3.8712% most school districts 0.5 to 2.05%  Utah 4.95%

In Ertholmene, which is not part of a municipality, there is no municipal tax. ^ Plus church tax for members of certain religions, also at a flat rate. Most municipalities in every region, including all municipalities in Aosta Valley, do not tax income. Of the municipalities that tax income, most in every region, including all in Basilicata, Molise and Sicily, use a flat rate, but some use progressive rates. Also applies to other Norwegian territories except Svalbard. The combined county and municipal tax rate ranges from 29.08 to 35.15%. In Gotland, the only municipality handles both county and municipal functions, so the county does not tax income and the municipality uses a tax rate similar to the combined rate in other counties. All other cantons and municipalities use progressive rates. The national progressive rates apply to England and Northern Ireland without modifications. They are reduced in Wales, whose government adds a flat rate. Scotland replaces the national rates with its own progressive rates. All other states, counties and municipalities either use progressive rates or do not tax income. Most counties and most municipalities in this state do not tax income, and all those that do use a flat rate. Where a county or municipal tax exists, the combined rate ranges from 0.5 to 4% depending on the location. ^ Most municipalities in this state do not tax income. All those that do use a flat rate. No counties or municipalities in this state tax income from work, but some tax interest and dividends, all using a flat rate. Where a county or municipal tax exists, the combined rate ranges from 0.5 to 3% depending on the location. ^ Only applies to interest and dividends. This jurisdiction does not tax income from work. Most counties, some municipalities and some school districts in this state tax income, most using a flat rate but some using regressive rates. Where a county, municipal or school district tax exists, the combined rate ranges from 0.45 to 4.25% depending on the location. Including the city of Baltimore, which is equivalent to a county. Most municipalities and some school districts in this state tax income, all using a flat rate. Where a municipal or school district tax exists, the combined rate ranges from 0.25 to 4.5% depending on the location. Most municipalities and most school districts in this state tax income, all using a flat rate. Where a municipal or school district tax exists, the combined rate ranges from 0.312 to 3.8712% depending on the location.

Jurisdictions without permanent population

Despite not having a permanent population, some jurisdictions tax the local income of temporary workers, using a flat rate.

Jurisdiction Tax rate  British Antarctic Territory 7%  French Southern and Antarctic Lands 9%  South Georgia and the South Sandwich Islands 7%

6.3% for residents of Réunion.

Jurisdictions reputed to have a flat tax

•  Anguilla does not have a general income tax, but since 2011 it imposes an "interim stabilisation levy" on salaries, composed of a portion paid by the employer and another paid by the employee through withholding. Each portion has a flat rate of 3%. This tax is in addition to a mandatory contribution to social security.
•  Azerbaijan imposes progressive tax rates of 14% and 25% on income from employment in the oil and gas and public sectors, but a flat tax rate of 14% on income from employment in other sectors and on investment income. It also imposes a flat tax rate of 20% on business income.
•  The British Virgin Islands do not have a general income tax, but impose a payroll tax on salaries, composed of a portion paid by the employer and another paid by the employee through withholding. The employee portion has a flat rate of 8%. This tax is in addition to mandatory contributions to social security and national health insurance.
•  Hong Kong: Some sources claim that Hong Kong has a flat tax, though its salary tax structure has several different rates ranging from 2% to 17% after deductions. Taxes are capped at 15% of gross income, so this rate is applied to upper income returns if taxes would exceed 15% of gross otherwise. Accordingly, Duncan B. Black of the progressive media-monitoring group Media Matters for America, says "Hong Kong's 'flat tax' is better described as an 'alternative maximum tax.'" Alan Reynolds of the Right-libertarian think tank Cato Institute similarly notes that Hong Kong's "tax on salaries is not flat but steeply progressive." Hong Kong has, nevertheless, a flat profit tax regime.
•  Saudi Arabia does not have a general income tax, but it imposes zakat (wealth tax) on the business assets of residents who are nationals of GCC countries, and income tax on the business income of residents who are not nationals of GCC countries and of nonresidents. Zakat has a flat rate of 2.5%, and income tax has a flat rate of 20%.

Jurisdictions that had a flat tax

•  Albania introduced a flat tax of 10% on personal income in 2008, and replaced it with two rates of 13% and 23% in 2014.
•  Czech Republic introduced a flat tax of 15% on personal income in 2008. However, this tax also applied to employer contributions to social security and health insurance, for an effective tax rate of about 20% on income from work up to the contribution limit. In 2013, a tax of 7% was added to income from work above the contribution limit, for an effective second rate of 22%. In 2021, the tax rates became 15 and 23%, both applying to all types of income and no longer to employer contributions.
•  Grenada had a flat tax of 30% on personal income until 2014, when it introduced a second lower rate of 15%.
•  Guyana had a flat tax of 30% on personal income until 2017, when it replaced it with progressive rates of 28% and 40%.
•  Iceland introduced a national flat tax on personal income in 2007, at a rate of 22.75%. With the additional municipal tax, which was already flat, the total tax rate was up to 36%. In 2010, Iceland replaced its national flat tax with progressive rates of 24.1% to 33%. With the additional municipal tax, which remained flat, the top rate became 46.28%.
•  Jamaica had a flat tax of 25% on personal income until 2010, when it introduced additional higher rates of 27.5% and 33%. It restored the flat tax of 25% in 2011, and introduced a second higher rate of 30% in 2016.
•  Latvia introduced a flat tax of 25% on personal income in 1997. The rate was changed to 23% in 2009, 26% in 2010, 25% in 2011, 24% in 2013, and 23% in 2015. In 2018, Latvia replaced its flat tax with progressive rates of 20%, 23% and 31.4%.
•  Lithuania introduced a flat tax of 33% on personal income in 1995. The rate was changed to 27% in 2006, 24% in 2008, and 15% in 2009. In 2019, Lithuania replaced its flat tax with progressive rates of 20% and 27%.
•  Mauritius introduced a flat tax rate of 15% on personal income in 2009. In 2017, it introduced an additional "solidarity levy" of 5% on high income, for a combined top rate of 20%. In 2018, it introduced an additional lower rate of 10%.
•  Montenegro introduced a flat tax of 15% on personal income in 2007, reduced to 12% in 2009 and 9% in 2010. It introduced a second higher rate of 15% on salaries in 2013, reduced to 13% in 2015 and 11% in 2016.
•  Russia introduced a flat tax of 13% on personal income in 2001, and a second higher rate of 15% in 2021.
•  Saint Helena introduced a flat tax of 25% on personal income in 2012, and replaced it with two rates of 26% and 31% in 2015.
•  Seychelles had a flat tax of 15% on personal income until 2018, when it introduced additional higher rates of 20% and 30%.
•  Slovakia introduced a flat tax of 19% on personal income in 2004, and a second higher rate of 25% in 2013.
•  Trinidad and Tobago had a flat tax of 25% on personal income until 2017, when it introduced a second higher rate of 30%.
•  Tuvalu had a flat tax of 30% on personal income until 2009, when it introduced a second lower rate of 15%.

Subnational jurisdictions

•  Alberta introduced a flat tax of 10% on personal income in 2001, and additional higher rates of 12, 13, 14 and 15% in 2016. This flat tax was in addition to the progressive rates imposed by the federal government of Canada.
•  Tennessee introduced a flat tax on interest and dividends in 1929, at a rate of 5%. The rate was changed to 6% in 1937, 5% in 2016, 4% in 2017, 3% in 2018, 2% in 2019, 1% in 2020, and the tax was repealed in 2021. This flat tax was in addition to the progressive rates imposed by the federal government of the United States.

See also

• Consumption tax
• Excess burden of taxation (or more broadly deadweight loss)
• FairTax
• Fiscal drag (also known as Bracket creep)
• Georgism
• Income tax
• Kemp Commission
• Land value tax
• Negative income tax
• Optimal tax
• Progressive tax
• Regressive tax
• Sales tax
• Single tax
• Taxable income elasticity (also known as Laffer Curve)
• Value added tax
• 9–9–9 Plan

Notes

1. Hoover Institution – Books – The Flat Tax Archived 23 May 2010 at the Wayback Machine
2. OASDI and SSI Program Rates & Limits Archived 18 February 2019 at the Wayback Machine, United States Social Security Administration.
3. Are Payroll Taxes Regressive Archived 4 June 2017 at the Wayback Machine The Economist.
4. ^ See for example the flat tax resources at idebate.org
5. "When Is a Dividend Deductible?". CFO. 18 September 2008. Archived from the original on 14 March 2010. Retrieved 28 November 2009.
6. "Publication 936 (2014), Home Mortgage Interest Deduction". Archived from the original on 10 September 2017. Retrieved 10 August 2017.
7. For example the ENERGYSTAR Archived 2 December 2009 at the Wayback Machine tax credit
8. As a recent example, transaction costs to damp speculation proposed by James Tobin, winner of the 1972 Nobel prize in economics, were recently (2009) proposed to the G20 by British PM Gordon brown as a way to prevent international currency speculation. Krugman Archived 24 May 2017 at the Wayback Machine
9. "Corporations | Internal Revenue Service". www.irs.gov. Archived from the original on 13 November 2017. Retrieved 12 November 2017.
10. Herman Cain's 9-9-9 flat tax variation Archived 26 September 2011 at the Wayback Machine.
11. E.D> Kleinbart, An analysis of Herman Cain's 999 plan, Social Science Research Center, 2011 Archived 15 October 2011 at the Wayback Machine.
12. The diminishing marginal utility means that the number of units of additional 'happiness' afforded by an extra unit of additional money, decreases as one spends more money. Archived 30 March 2010 at the Wayback Machine
13. Hall, Robert; Rabushka, Alvin (2007). "Appendix: A Flat-Tax Law" (PDF). The Flat Tax (2nd ed.). Hoover Press. ISBN 9780817993115. Archived (PDF) from the original on 23 December 2015. Retrieved 6 May 2017.
14. "The flat-tax revolution". The Economist. 14 April 2005. Archived from the original on 20 December 2005. Retrieved 28 October 2005.
15. "The case for flat taxes". The Economist. 14 April 2005. Archived from the original on 11 November 2010. Retrieved 17 January 2011.
16. The Flat Tax at Work in Russia: Year Three Archived 2 April 2015 at the Wayback Machine, Alvin Rabushka, Hoover Institution Public Policy Inquiry, www.russianeconomy.org, 26 April 2004
17. "The "Flat Tax(es)": Principles and Evidence" (PDF). Archived (PDF) from the original on 20 March 2007. Retrieved 8 March 2007.
18. Boortz, Neal; Linder, John (2006). The Fair Tax Book (Paperback ed.). Regan Books. ISBN 0-06-087549-6.
19. Law on the income tax on individuals Archived 12 June 2019 at the Wayback Machine, Chamber of Commerce and Industry of the Republic of Abkhazia. (in Russian)
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References

• Steve Forbes, 2005. Flat Tax Revolution. Washington: Regnery Publishing. ISBN 0-89526-040-9
• Robert Hall and Alvin Rabushka, 1995 (1985). The Flat Tax. Hoover Institution Press.
• Richard Parncutt, 2006–2010. Free enterprise without poverty: Effectively progressive income tax..
• Anthony J. Evans, "Ideas and Interests: The Flat Tax" Open Republic 1(1), 2005

External links

• The Laffer Curve: Past, Present and Future: A detailed examination of the theory behind the Laffer curve, and many case studies of tax cuts on government revenue in the United States
• Podcast of Rabushka discussing the flat tax Alvin Rabushka discusses the flat tax with Russ Roberts on EconTalk.
• Podcast of Rabushka discussing the flat tax Alvin Rabushka discusses the flat tax on PoliTalk.
• The Flat Tax: How it Works and Why it is Good for America

• Taxation and redistribution