This period is often overlooked, but for households with sizable IRAs, 401(k)s, brokerage accounts, and future Social Security benefits, can be one of the most important retirement tax planning windows of the entire retirement period.
Most people think retirement tax planning is mainly about April 15. Not true. Think of it as the quiet stretch between two busy intersections.
You may have retired from full-time work, so your taxable income may be lower than it has been in years. But required minimum distributions, Social Security, Medicare premiums, investment income, and future tax law changes may be lurking just down the road.
With proper planning, the retirement tax planning window can create opportunities. Ignored, it can close before you realize it was even open – and the results can be costly, maybe even irrevocable.
What is the retirement tax window?
The retirement tax window is the period after you stop working, or significantly reduce your earned income, but before required minimum distributions become substantial.
For many retirees, this may occur between ages 62 and 73. For others, the window may be shorter or longer depending on work, pensions, Social Security timing, investment income, and account balances.
During these years, taxable income may temporarily drop. That can create room to make strategic moves before income rises again later due to required minimum distributions (more on that in a minute) – and, of course, who knows what tax brackets will look like then?
This is especially important for retirees with large traditional IRA or 401(k) balances. Those accounts have not escaped taxes. They have only postponed them. Your statement may quote an account balance, but it’s not all your money. Eventually, Uncle Sam would like his turn at the buffet.
Why required minimum distributions matter
Required minimum distributions, often called RMDs, are mandatory withdrawals from many retirement accounts. Once they begin, they can increase taxable income whether you need the money or not.
That can create a domino effect.
Higher taxable income may increase federal taxes, of course; but, it may also cause more of your Social Security to be taxable. It may increase Medicare premiums. It may also reduce flexibility for future tax planning.
The larger your traditional retirement account balance, the more important this becomes. A retiree with a small IRA may not feel much pressure from RMDs. But, a retiree with $1 million, $2 million, or more in tax-deferred accounts may have a very different experience.
This is why waiting until RMDs begin may be like waiting until the ball is in the water before planning course management.
Roth conversions: useful, but not automatic
One of the most common strategies during this tax window is a Roth conversion.
A Roth conversion moves money from a traditional IRA or retirement account into a Roth IRA. The converted amount is generally taxable in the year of conversion. In exchange, future qualified Roth withdrawals may be tax-free, and Roth IRAs are not subject to lifetime RMDs for the original owner.
That can be powerful. But it is not automatically wise. The question is not simply, “Should I do a Roth conversion?”
The better question is: How much should I convert this year, and what other costs could that conversion trigger?
A thoughtful Roth conversion strategy looks at tax brackets, Medicare premiums, Social Security timing, future RMDs, cash flow needs, estate goals, and whether taxes can be paid from non-retirement assets.
Converting too little may waste a planning opportunity. Converting too much may create a tax bill that does not make sense. Note: IFG Newsletter subscribers can access a handy Roth Conversion Decision Guide here.
This is where tax planning gets more like golf than checkers. Club selection matters.
Capital gains also need attention
Many retirees also have taxable brokerage accounts with appreciated investments. These accounts create their own planning opportunities.
In lower-income retirement years, it may make sense to harvest some capital gains, rebalance concentrated positions, or reposition investments more tax-efficiently. In some cases, capital gains may be taxed at a favorable rate, depending on total income.
But capital gains do not exist in a vacuum. Selling appreciated investments may affect taxable income, Medicare premiums, and the taxation of Social Security. It can also change future income from dividends and interest.
The right question is not, “Should we sell this investment?”
The right question is, “What does this sale do to the whole retirement income plan?”
Social Security timing is an important part of the tax plan
Social Security is often treated as a separate decision. It should not be.
Claiming Social Security early may reduce the amount you need to withdraw from investments in the short term. Delaying Social Security may increase future monthly benefits, especially for the higher-earning spouse. But delaying may also require larger portfolio withdrawals during the bridge years.
Those withdrawals may create taxable income. That taxable income may affect Roth conversion opportunities, capital gains planning, or Medicare premiums.
In other words, Social Security timing is not just an income decision. It is also a tax-planning decision.
For married couples, the survivor benefit adds another layer. The decision should not focus only on the first spouse to pass away. It should also consider the income picture for the surviving spouse, who may later file as a single taxpayer with less favorable (read: higher) tax brackets.
Yeah, it’s an unpleasant topic, but ignoring it does not make it go away. Retirement planning is not always fun, but neither is pretending math took the day off.
The fun continues:
Medicare premiums can surprise retirees
Many retirees are surprised to learn that higher income can increase Medicare Part B and Part D premiums through IRMAA, the income-related monthly adjustment amount.
Here’s a time-bomb: Medicare premiums are often based on income from two years earlier. That means income decisions at age 63 can affect Medicare costs at age 65.
This does not mean retirees should avoid Roth conversions, capital gains, or other income-producing strategies. Sometimes paying more tax or even higher Medicare premiums in one year may still be worth it over the long run.
But it should be intentional, not accidental.
A good plan looks before crossing the income threshold.
The goal is coordination
The biggest retirement tax planning failure is treating Roth conversions, Social Security, capital gains, and Medicare premiums as separate decisions.
They are connected.
A Roth conversion may affect Medicare premiums. Social Security timing may affect portfolio withdrawals. Portfolio withdrawals may affect capital gains planning. RMDs may affect future tax brackets. One decision can change the next.
Is planning beginning to look better to you?
For retirees with $1 million or more in retirement savings, this coordination can be especially valuable. The issue is not just growing the portfolio. It is managing how money comes out, how it is taxed, and how the plan holds together over time.
What should retirees do during this window?
A useful retirement tax review should ask:
- What will taxable income look like this year?
- How much room exists in the current tax bracket?
- Should part of an IRA be converted to a Roth?
- Should appreciated investments be sold or rebalanced?
- When should Social Security begin?
- Could Medicare premiums be affected two years from now?
- What might future RMDs look like?
- How would the surviving spouse be taxed later?
These questions are not about predicting the future perfectly. Stuff happens. The questions are more about making better decisions with the information available today.
Final thought
The years after retirement and before RMDs can be some of the most valuable planning years of your financial life. The paycheck may have stopped, but the planning should not.
Financial planning and wealth management are interconnected and an ongoing process. Like medical and dental maintenance, it’s continuous.
For many retirees, this is the time to take a careful look at Roth conversions, Social Security timing, investment gains, Medicare premiums, and future withdrawals before the decisions become less flexible.
Retirement tax planning is not about finding one magic move. It is about coordinating several smart moves in the right order.
Frequently Asked Questions About the Retirement Tax Window
What is the retirement tax window?
The retirement tax window is the period after you stop working, or significantly reduce your earned income, but before required minimum distributions become substantial. For many retirees, this may happen between retirement and their early 70s. During this period, taxable income may be lower, which can create opportunities for Roth conversions, capital gains planning, and more tax-efficient retirement withdrawals.
Should I do Roth conversions before RMDs begin?
Roth conversions before RMDs may make sense if you are in a lower tax bracket after retirement and expect higher taxable income later. Converting part of a traditional IRA or 401(k) to a Roth IRA can reduce future RMDs and create more tax flexibility. However, the conversion itself is taxable, so the amount should be planned carefully. Having an analysis done should be a normal part of your financial planning and wealth management process. This decision guide should help.
Can Roth conversions increase Medicare premiums?
Yes. Roth conversions can increase Medicare premiums if the added taxable income pushes you above an IRMAA threshold. IRMAA stands for income-related monthly adjustment amount, and it can increase Medicare Part B and Part D premiums. Because Medicare generally looks at income from two years earlier, Roth conversions before and during Medicare years should be coordinated with the rest of your retirement income plan.
Should I delay Social Security to do Roth conversions?
Delaying Social Security may create room for Roth conversions because taxable income may be lower before benefits begin. This can be useful for retirees who want to reduce future RMDs or build more tax-free income for later. However, delaying Social Security also means relying more heavily on portfolio withdrawals during the bridge years, so the decision should be reviewed in context.
Are capital gains part of retirement tax planning?
Yes. Capital gains are an important part of retirement tax planning, especially for retirees with taxable brokerage accounts. In lower-income retirement years, it may make sense to sell appreciated investments, rebalance a portfolio, or reset cost basis. But capital gains can also affect taxes, Medicare premiums, and the taxation of Social Security, so they should not be reviewed in isolation. Actually, nothing in your plan should be reviewed in isolation.
How do RMDs affect Social Security taxes?
RMDs can increase taxable income, which may cause more of your Social Security benefits to be taxed at the federal level. For retirees with large traditional IRA or 401(k) balances, future RMDs may push income higher than expected. Planning before RMDs begin can help manage that risk and may provide more control over taxable income later.
How can I reduce future RMD taxes?
Future RMD taxes may be reduced through strategies such as partial Roth conversions, tax-efficient withdrawals, qualified charitable distributions after age 70½, and careful account sequencing. The best approach depends on your income, tax bracket, account mix, charitable goals, Medicare premium exposure, and long-term retirement income plan.
Who benefits most from retirement tax-window planning?
Retirement tax-window planning may be especially valuable for retirees with large traditional IRAs, 401(k)s, taxable investment accounts, pensions, or delayed Social Security benefits. It can also help married couples concerned about survivor taxes, future RMDs, Medicare premiums, and leaving assets to heirs more tax-efficiently.
If you’d like some help, tell me your priorities. This will give us something to talk about.
Jim
