For most of their working lives, people tend to think about taxes as an annual event: earning income, filing a return, and paying what they owe. Retirement changes that relationship with taxes in ways that many people do not fully anticipate until they are already in the middle of it.
Taxes on retirement income are not just an annual calculation. They are a planning variable that affects how much you can spend, how long your savings last, and how much of what you have built actually reaches you and your family.
The challenge is that retirement income comes from multiple sources, each with its own tax treatment. Social Security, traditional IRA and 401(k) distributions, Roth account withdrawals, rental income, and investment income from taxable accounts all get treated differently by the tax code. How you draw from those sources, and in what order, has a direct effect on your overall tax burden in retirement.
Where Most of the Tax Burden Comes From
The foundation of most people’s retirement savings is a tax-deferred account, typically a traditional IRA or 401(k). These accounts offer a tax deduction on contributions during the working years, which makes them an attractive savings vehicle. But the deduction is a deferral, not an elimination. Every dollar that goes into a tax-deferred account eventually comes out as ordinary income, taxed at whatever rate applies at the time of withdrawal.
For people who have spent decades contributing to these accounts, the balances can be substantial. And substantial balances mean substantial required minimum distributions (RMDs) once those distributions are mandated by the IRS, currently beginning at age 73.
Required Minimum Distributions and the Tax Cascade
RMDs do not stop at a convenient income level. They are calculated based on account balance and life expectancy, and for retirees with large tax-deferred accounts, they can push taxable income well above what is needed for day-to-day expenses.
That excess income does not just create a larger tax bill in isolation. It can trigger a cascade of secondary effects that compound the overall tax burden. Higher taxable income can push Social Security benefits into a higher taxable range, with up to 85 percent of benefits subject to tax depending on combined income levels. It can also trigger income-related Medicare premium surcharges, known as IRMAA, which can add hundreds of dollars per month to Medicare costs.
How Social Security Taxation Works
Social Security taxation is based on a concept called combined income, which includes adjusted gross income plus nontaxable interest plus half of Social Security benefits. As combined income rises, a larger portion of Social Security becomes taxable, up to a maximum of 85 percent.
This means that drawing heavily from tax-deferred accounts can increase Social Security taxation in ways that are not immediately obvious. The sequencing of withdrawals, meaning which accounts you draw from first and in what amounts, has a direct effect on how much of your Social Security income is subject to tax.
A Note on Changing Tax Rates
Taxes on retirement income are further complicated by the fact that tax rates and brackets can change over time. Planning for that possibility while there is still time to act is a practical consideration for anyone with significant balances in tax-deferred accounts.
What You Can Do Before Retirement
The most effective time to address retirement tax exposure is before retirement begins. Once income sources are set and accounts are in distribution mode, the options for restructuring narrow considerably. The years leading up to retirement represent a window of planning flexibility that is worth using deliberately.
Several strategies are worth evaluating as part of a pre-retirement tax review:
- Roth conversions: Converting a portion of a traditional IRA or 401(k) to a Roth account means paying tax on the converted amount now, in exchange for tax-free growth and withdrawals later. Whether this makes sense depends on your current tax bracket and expected future income.
- Asset location: Holding different types of investments in different account types based on their tax treatment can reduce the overall tax drag on a portfolio over time.
- Social Security timing: Delaying Social Security can increase the monthly benefit and also changes how Social Security income interacts with other income sources, which can affect your overall tax picture in meaningful ways.
Reviewing Your Tax Exposure
When evaluating your tax situation before retirement, these are the areas worth focusing on:
- The projected balance of tax-deferred accounts at retirement and the resulting RMD obligations
- Whether a Roth conversion strategy makes sense given your current and expected future tax rates
- How Social Security timing interacts with your other income sources
- Whether your account structure gives you enough flexibility to manage taxable income in retirement
Building a Tax-Aware Retirement Income Plan
A tax-aware retirement income plan does not need to be complicated, but it does need to be deliberate. The goal is to understand how each of your income sources will be taxed, how they interact with each other, and how to sequence withdrawals in a way that keeps your overall tax burden as manageable as possible throughout retirement.
Taxes on retirement income are not a fixed cost that you simply accept. They are a planning variable that responds to how your income is structured, when withdrawals are taken, and how accounts are organized. Understanding that dynamic early gives you the tools to make more informed decisions about your retirement plan.
If you are approaching retirement and want to take a closer look at how taxes could affect your income plan, Proper Retirement is here to help. Contact us today to schedule a conversation about your tax situation and what a more deliberate approach to retirement income planning could look like for you.
