How to Pay Less Tax in Retirement Using Arizona's Tax Laws

One of the questions I hear regularly from clients who have recently moved to the Phoenix area — or who are planning to retire here — is whether Arizona is actually a good state for retirees from a tax perspective. The short answer is yes. But the longer answer is that the Arizona tax environment is only as valuable as the planning you put around it. Favorable rules don't help you if you're not taking advantage of them.

Let me walk you through what Arizona's tax picture actually looks like for retirees, and where the real planning opportunities live.

What Arizona gets right for retirees

Arizona has made some meaningful moves in recent years that benefit retirees specifically. The state now has a flat income tax rate — a significant simplification from the previous tiered system, and a rate that compares favorably to many other states retirees consider, including California, Oregon, and Minnesota.

More importantly for most retirees: Arizona does not tax Social Security benefits. That's not universal across states — a number of states still include Social Security in taxable income — and it's a genuine advantage that adds up meaningfully over a long retirement.

Arizona also has no estate tax at the state level. For clients who are thinking about legacy planning and what they'll pass on to children or grandchildren, that's a clean advantage compared to states that impose their own estate tax on top of the federal one.

Where federal taxes still matter — a lot

Here's the important counterpoint: Arizona's favorable state tax environment doesn't do anything about your federal tax bill, and for most retirees, federal taxes are the larger number by a significant margin.

Federal taxes apply to traditional IRA and 401(k) withdrawals, to a portion of Social Security income depending on your total income, to capital gains in taxable accounts, and to Roth conversion income. Managing those obligations thoughtfully — especially in the early years of retirement before Required Minimum Distributions begin — is where most of the real tax planning work happens.

I wrote about Roth conversions in detail recently, but it's worth connecting the dots here: the reason the pre-RMD window is so valuable from a tax standpoint isn't just about federal brackets in the abstract. It's about using a period of potentially lower income— which Arizona's flat rate makes relatively predictable — to convert pre-tax money to Roth at rates that may be lower than what you'll face once RMDs are flowing.

IRMAA: the Medicare surcharge most people don't see coming

One of the tax-adjacent issues I want to flag for anyone planning retirement in Arizona is IRMAA — the Income Related Monthly Adjustment Amount. This is a Medicare premium surcharge that applies when your income exceeds certain thresholds, and it catches a lot of retirees off guard.

Here's how it works: Medicare looks at your income from two years prior to determine whether you owe a surcharge on your Part B and Part D premiums. In 2026, the standard Part B premium is $202.90 per month. But if your income two years ago exceeded the threshold— which for many retirees can happen in a year of large IRA withdrawals, a Roth conversion, or a home sale — that premium can jump significantly, sometimes by hundreds of dollars per month per person.

For married couples, both spouses pay the surcharge. And because it's based on income from two years prior, it can feel like it comes out of nowhere.

The planning implication is real: in years when you're doing significant Roth conversions or taking large IRA distributions, it's worth running the numbers on where your income lands relative to the IRMAA thresholds. Sometimes it makes sense to stay just below a threshold. Other times the conversion is worth the surcharge. But it's a decision that deserves to be made intentionally, not discovered after the fact on your Medicare statement.

Capital gains planning in a flat-tax state

Arizona's flat income tax rate also has an interesting implication for capital gains. At the federal level, long-term capital gains are taxed at preferential rates — 0%, 15%, or 20%depending on your income. At the state level in Arizona, capital gains are taxed as ordinary income at the flat rate.

For retirees who have appreciated assets in taxable brokerage accounts, this creates some planning opportunities. Harvesting gains in years when your income is low — or strategically timing the sale of appreciated securities — can help manage both the federal and state tax impact. And as I mentioned in last month's post on charitable giving, donating appreciated securities directly to charity avoids capital gains tax entirely at both the federal and state level.

The relocation question

I work with a number of clients who moved to Phoenix from higher-tax states — California in particular. For those clients, the tax benefit of the move was often a meaningful part of the retirement math. Arizona's combination of no Social Security tax, a flat income tax rate, no state estate tax, and a relatively low cost of living compared to coastal metros can add up to real dollars over a 25 or 30 year retirement.

If you're still in the decision phase about where to retire, the tax picture is worth modeling carefully. It's not the only factor — healthcare access, proximity to family, and quality of life all matter — but it's a factor that has a number in front of it, and that number is worth knowing.

Putting it together

What I want clients to take away from this is that tax planning in retirement isn't a one-time event. It's an ongoing process of managing income across multiple sources — Social Security, IRA withdrawals, Roth conversions, capital gains, maybe part-time work — in away that minimizes your lifetime tax burden rather than just this year's bill.

Arizona gives you a good foundation to work from. But the foundation is only as useful as the structure you build on top of it. If you haven't had a detailed conversation about your retirement tax strategy — not just your investments, but how your income will be taxed year by year — that's a conversation worth having sooner rather than later.

I'd be glad to help you think through it.

Disclosure

The content of this post is for educational purposes only and should not be construed as personalized financial, tax, or legal advice. This is not an offer to buy or sell securities. No investment process is free of risk and there is no guarantee that the investment process described herein will be profitable. Investors may lose all of their investments. Past performance is not indicative of current or future performance and is not a guarantee. Investment advice offered through IHT Wealth Management, a registered investment adviser.