You can retire when your guaranteed income and your savings can pay for the life you want, for as long as you live, after taxes and after inflation, and through a bad market. Market risk, taxes, inflation, Social Security timing and the needs of a surviving spouse all act on the same income. They are easiest to get right when they are decided together.
Social Security timing, Medicare premiums and IRA withdrawals are not separate decisions. They are the same income problem viewed from three angles.
What questions should I answer before I retire?
Five questions decide most retirement plans. Each one has its own page.
There is no single number. Split your spending into the bills you must pay and the spending you could cut back. Subtract your guaranteed income, such as Social Security and any pension. What is left is the gap your savings must fill, for as long as you live, after taxes and inflation.
You can claim at 62, at full retirement age (67 for anyone born in 1960 or later), or at 70. Claiming at 62 pays about 30% less for life. Waiting to 70 pays about 24% more than the full-age amount. For a married couple, the bigger question is usually which spouse waits, because the larger check becomes the survivor’s check.
A market drop just before or just after you retire, while withdrawals are starting, does more damage than the same drop ten years later. Two retirees can earn the same average return and end up with very different results.
An annuity is less an investment than a way to buy income you cannot outlive. It can make sense when your guaranteed income does not cover your essential bills. The price is less access to your money, and the guarantee is only as strong as the insurer.
After the first spouse dies, household income usually falls, but the survivor now files as single, with narrower tax brackets, half the standard deduction and lower Medicare thresholds. The result can be more tax on less income.
Why do these decisions need to be made together?
Because each one moves the same income. When you claim Social Security changes how much you must draw from your IRA. What you draw from your IRA sets your tax bracket and your Medicare premiums. Your tax bracket decides whether a Roth conversion is worth doing this year. And Roth conversions done while both spouses are alive shrink the tax bill a surviving spouse will face later.
A plan that decides each piece on its own can look reasonable piece by piece and still leave money on the table.
How much difference can a coordinated plan make?
An illustration from Financial Fortress: Grant and Susan. Grant and Susan retire at 62 with $3.5 million in a traditional IRA and $1 million in a brokerage account. Deciding each piece separately, they can spend $150,000 a year.
With Social Security timing, Roth conversions and withdrawals coordinated as one plan, they can spend $193,000 a year, 28.6% more, and still leave their heirs about the same. Same savings. The extra spending comes from where the money sits and when it moves.
Illustrative composite and hypothetical figures from the book, not clients. Assumes 7% growth on the IRA and Roth, 6% on the brokerage account, and 2026 federal tax rules. Actual results will differ.
Which retirement decisions are hardest to undo?
Start with these, because they are the ones you usually cannot take back:
- When each of you claims Social Security. The claim sets the size of the check for life, and for a couple it sets the survivor’s check too.
- How much of your essential spending is guaranteed. Turning savings into lifetime income can be hard or impossible to reverse.
- Which accounts you draw from first. A low-tax year that passes without a Roth conversion does not come back.
Investment choices can be changed next year. These usually cannot.
What can go wrong in a retirement plan?
- A bad market at the wrong time. Losses taken early, while money is coming out, are never fully recovered. See sequence of returns risk.
- Living longer than the money. The plan has to last into your 90s. Lifetime income keeps paying no matter how long you live. See whether annuities are a good investment.
- Inflation. Its effect on prices builds up and does not reverse. From December 2020 to December 2025, consumer prices rose 24.4%. Social Security is adjusted for it every year, which is one reason when you claim matters so much.
- Taxes. A dollar from an IRA is taxed and a dollar from a Roth is not, so the same spending can need very different withdrawals. See how much you need to retire.
- Losing a spouse. The survivor can pay more tax on less income. See the widow’s penalty.
- Long-term care. One of the largest costs a retiree can face, and it arrives late, when options are fewest.
Inflation source: Bureau of Labor Statistics, CPI-U, December 2020 (262.045) to December 2025 (326.031).
What ages matter when planning for retirement?
- 50: catch-up contributions to 401(k)s and IRAs begin, with a larger 401(k) catch-up from 60 to 63.
- 55: if you leave your job in or after the year you turn 55, that employer’s 401(k) can usually be drawn without the early-withdrawal penalty.
- 59½: IRA and 401(k) withdrawals are free of the 10% penalty. They are still taxed.
- 62: the earliest age to claim Social Security, at a permanent reduction.
- 65: Medicare eligibility, whatever age you claim Social Security. Sign up on time or pay a penalty for life.
- 67: full retirement age for anyone born in 1960 or later.
- 70: Social Security stops growing. There is no reason to wait longer.
- 70½: qualified charitable distributions from an IRA become available.
- 73 or 75: required minimum distributions begin: 73 if you were born from 1951 to 1959, 75 if born in 1960 or later.
Most of the costly mistakes happen between 60 and 75, when these dates arrive close together and each one changes the others.
Frequently asked questions
At what age can I retire?
At any age your income can carry you. The dates that set the terms are 59½ for penalty-free withdrawals, 62 for the earliest Social Security, 65 for Medicare and 73 or 75 for required withdrawals.
What is the first retirement decision I should make?
The ones that are hardest to undo: when each spouse claims Social Security and how your essential spending will be covered by guaranteed income.
Can I retire before 65 without Medicare?
Yes, but you need health insurance until 65, from a former employer, COBRA or the marketplace. Plan for that cost separately; it is often one of the largest in the early years.
Questions to ask your advisor
- Has anyone looked at our Social Security, taxes, Medicare premiums and withdrawals as one plan, or as separate decisions?
- Which guaranteed income sources cover our essential expenses, and what is the gap if one of them stops?
- What does the plan expect us to do if markets fall 30% in the first two years?
- If one of us dies first, what happens to the survivor’s income and tax bill?
Related questions
Want your retirement questions answered for your own situation?
Schedule a conversation or read Chapter 1 of Financial Fortress.
This page is general education, not advice for your situation. Triathlon Partners LLC is a registered investment adviser in Connecticut and New York. Registration does not imply a certain level of skill or training.