Tax Services
August 18, 2023

What You Need to Know About Arizona’s Flat Tax in 2023

Stewart Willis

The Arizona flat tax is a new tax structure that benefits all residents. By implementing a flat tax, Arizona ensures everyone pays their fair share, regardless of income level. With the new Arizona flat tax rate for 2023 and beyond, you can enjoy greater financial stability and economic growth. The new Arizona flat rate income tax is considered a tax cut for everyone in the state.

What Is the New Arizona Flat Income Tax?

Arizona residents will be subject to a flat tax rate of 2.5% for 2023, which must be filed by April 2024.

In the past, Arizonans had to deal with two tax rates for the 2022 tax year. Those with a taxable income of up to $28,652 were subject to a 2.55% rate. Meanwhile, those earning above that amount had to pay 2.98%. 

Jointly filing married couples were required to pay a 2.55% rate for taxable income below $57,305. This rate would increase to 2.98% for any income exceeding that threshold.

Who Needs to Pay Arizona Flat Taxes?

You may be subject to Arizona income tax depending on your revenue source and residency status. Below is a guide to how you will be taxed:

  • Resident: You will be taxed on all income in and out of Arizona.
  • Part-year Resident: You will be taxed on all income while you are a resident. While you are a non-resident, you will be taxed on all income that originates from Arizona.
  • Non-resident: You will be taxed on all income from Arizona sources.

What Are the Advantages of the Arizona Flat Tax Rate?

With this new tax structure, all taxpayers can breathe a sigh of relief with the numerous benefits.

1. Simplifies Tax Filing

The Arizona 2.5% flat income tax plan has received support from those who believe it is beneficial. A more straightforward tax structure simplifies the filing process for all taxpayers. Now, it is easier for you to calculate your individual income tax.

2. Encourages Higher Individual Income

This new Arizona flat rate tax of 2.5% will empower individuals to increase their income without the fear of being pushed into higher tax brackets. Less strain on individuals who could earn more encourages you to make wise investments and pursue economic activities without worrying about tax implications. With the previous progressive tax system, if you earned more, then you also contribute a higher percentage of your income in taxes.

3. Makes Planning Ahead Easier

There's no need to monitor income to avoid additional taxes constantly withe new taxing system. You have the freedom to chase bigger opportunities without being burdened by higher tax rates. This also allows you to plan ahead because you know there will be a consistent tax rate across the board.

You can make use of financial tools like annuities and not worry about being pushed into a higher tax bracket. When it comes to retirement planning, you can avoid unforeseen expenses if you have a sudden spike in your income.

What Are the Disadvantages of the Arizona Flat Tax Rate?

While implementing a flat individual income tax rate has its advantages, there are some potential concerns you should be aware of.

1. Burden on Lower Income Individuals

Lower-income individuals bear a disproportionate burden under a flat tax rate, making it regressive in nature. This is because they spend a higher percentage of their income on basic necessities, causing the same tax rate to have a more considerable impact on their disposable income.

For example, if you expect to have much lower income in your retirement years, a flat income tax rate can really take a bit out of your spending power.

2. Income Inequality

Implementing a flat tax rate could potentially worsen income inequality, as it would reduce the tax burden on high income earners primarily. Progressive tax systems, on the other hand, effectively address this issue by imposing higher tax rates on higher-income individuals. They serve as a means to distribute wealth more evenly and mitigate income inequality.

3. Increased Complexity with Retirement Accounts

A flat tax rate may simplify tax filing, but it could affect retirement accounts such as 401k, IRA, and Roth IRA. Every account has its own specific tax implications and tax treatments. Implementing a flat tax system could complicate the tax treatment of these accounts, which may have negative consequences for retirees who based their retirement savings plans on the existing tax system.

4. State Revenue Loss

By implementing a flat tax rate in Arizona, it is important to consider the potential impact of a flat tax rate of 2.5% on state revenue. There may be a notable decrease in revenue, especially since the rate aligns closely with what lower-income individuals currently contribute. This could lead the state to implement other measures to make up for lost revenue. You could potentially see an increase in other taxes or expenses resulting in a higher cost of living.

Lower government revenue has the potential to result in decreased funding for public services like infrastructure, education, and healthcare. This would have a greater impact on lower-income and retirees who depend heavily on these services.

Why Do You Need Professional Help with the Arizona Flat Tax Rate?

While the 2.5 flat tax rate may seem straightforward, the tax code as a whole can be quite complicated which is why you need expert tax services. Determining what qualifies as taxable income, managing various deduction types, and navigating taxes related to retirement accounts, investments, or business income can all pose challenges.

Closeup of a woman reviewing tax documents

Each individual has a distinct financial situation. The tax professionals at Asset Preservation Wealth and Tax offer personalized advice based on your needs as an Arizona taxpayer. While the flat income tax rate affects the state only, you still need to consider federal taxes and your federal tax bracket. We have a holistic approach to tax preparation and planning so you can plan for the future.

Our certified tax professionals have access to legal professionals so they can provide insightful strategic advice for future planning. They can assist you in structuring tax plans, planning for retirement, and efficiently handling estate planning to minimize tax obligations.

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Stewart Willis is the founder and president of Asset Preservation Wealth & Tax, a financial planning firm in Phoenix, Arizona. Investment advisory services offered through Foundations Investment Advisors, LLC, an SEC registered investment adviser.

The commentary on this blog reflects the personal opinions, viewpoints and analyses of the author, Stewart Willis, providing such comments, and should not be regarded as a description of advisory services provided by Foundations Investment Advisors, LLC (“Foundations”), an SEC registered investment adviser or performance returns of any Foundations client. The views reflected in the commentary are subject to change at any time without notice. Nothing on this website constitutes investment, legal or tax advice, performance data or any recommendation that any particular security, portfolio of securities, transaction or investment strategy is suitable for any specific person. Personal investment advice can only be rendered after the engagement of Foundations for services, execution of required documentation, including receipt of required disclosures. Any mention of a particular security and related performance data is not a recommendation to buy or sell that security. Foundations manages its clients’ accounts using a variety of investment techniques and strategies, which are not necessarily discussed in the commentary. Any statistical data or information obtained from or prepared by third party sources that Foundations deems reliable but in no way does Foundations guarantee the accuracy or completeness. Investments in securities involve the risk of loss. Any past performance is no guarantee of future results. Advisory services are only offered to clients or prospective clients where Foundations and its advisors are properly licensed or exempted. For more information, please go to and search by our firm name or by our CRD # 175083.

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