The direct comparison starts with the income Arizona taxes that Nevada doesn't: pension payments, IRA and 401(k) withdrawals, wages, and other ordinary income, all taxed at Arizona's flat 2.5% and all untaxed in Nevada. Social Security and military retirement pay are a wash between the two states, both are fully exempt in Arizona and, because Nevada has no income tax at all, both are untaxed there too.

The size of Nevada's advantage scales directly with how much of your income falls into the taxable categories. A household living mostly on Social Security and a modest pension might see only a few hundred dollars a year in Arizona income tax, a small enough number that other factors, housing costs, healthcare access, proximity to family, are likely to matter more than the tax difference. A household drawing $150,000 a year from IRA and 401(k) accounts faces roughly $3,750 a year in Arizona tax at the flat 2.5% rate, that same amount in Nevada, none.

Sales tax works in the other direction, though the two states are closer here than most comparisons suggest. Nevada's state sales tax is 6.85%, with an average combined state-and-local rate around 8.24% once local add-ons are included. Arizona's state rate is lower, but many Arizona cities layer on local sales tax that brings the effective combined rate to a similar range, often 8% to 9% depending on the specific city. For a retiree with substantial annual spending, this largely offsets rather than adds to the income-tax-only comparison.

Property tax also factors in, and here Nevada holds a modest edge: average effective property tax rates run around 0.5% of assessed value in Nevada versus a similar but slightly higher range in Arizona depending on the county and any special district assessments. Neither state has an estate or inheritance tax, so that particular factor is neutral between them.

Beyond the tax math, the two states differ in ways that matter for a full retirement decision: Arizona has broader healthcare infrastructure across more of the state, while Nevada's healthcare access outside the Las Vegas and Reno metro areas is comparatively thinner. Arizona also has a considerably larger retiree population and retirement-specific infrastructure than Nevada does outside its two major metros.

For military retirees specifically, both states are attractive: Arizona fully exempts military retirement pay, and Nevada has no income tax on anything, so this population sees no state tax on military retired pay in either state, making the decision come down entirely to non-tax factors, proximity to a specific base community, family, climate preference, and cost of living.

Roth conversion planning is where the two states diverge most for households actively managing their tax bracket over a multi-year window. Nevada's zero rate means a Roth conversion has no state-level cost at all, the entire decision can be optimized purely against federal brackets. Arizona's flat 2.5% adds a small, predictable cost to every dollar converted, which is still generally worth paying given how much lower it is than most alternatives, but it's a real number that should be included in the conversion math rather than assumed away.

For households who already own property or have strong existing ties in one state over the other, family, established healthcare providers, community, religious congregation, those factors frequently outweigh a moderate tax difference in the final decision, particularly once the practical Arizona-Nevada gap is run against an actual income projection rather than assumed from the headline rate alone.

Neither state has an estate or inheritance tax, so wealth transfer planning isn't a differentiator between them the way it might be against a state that still taxes estates. The practical Arizona-Nevada decision, once the income tax math is run correctly, tends to come down to a mix of moderate, quantifiable tax savings and larger, harder-to-quantify lifestyle and healthcare-access factors, not a single dominant financial variable in either direction.

Run the actual comparison against your specific projected income mix rather than defaulting to 'Nevada has no income tax, so it wins.' If Social Security and a modest pension make up most of your income, the practical Arizona-Nevada tax difference may be small enough that other factors should drive the decision.

If you expect substantial annual IRA or 401(k) withdrawals, or a series of large Roth conversions, Nevada's zero rate produces a real, quantifiable savings that compounds over a multi-decade retirement, worth modeling explicitly against Arizona's 2.5% rather than treating as a minor detail.

• Assuming Nevada's 'no income tax' framing means an automatically large savings over Arizona, regardless of income mix. For households living mostly on Social Security and a modest pension, the practical difference can be small.
• Not accounting for Nevada's higher average combined sales tax, which partially offsets the income tax savings for high-spending retirees.
• Ignoring non-tax factors, healthcare access and retiree-specific infrastructure differ meaningfully between the two states outside their major metro areas.
• Assuming military retirement pay is taxed differently between the two states, it's fully exempt in Arizona and, because there's no income tax at all, untaxed in Nevada as well.