If you missed today’s tax deadline, don’t panic — you still have options. The IRS charges penalties and interest on late payments, but acting quickly can significantly reduce what you owe. Filing late is almost always better than not filing at all, and in many cases, retirees qualify for penalty relief they don’t even know exists. Here’s everything you need to know to get back on track.
What actually happens if you miss a tax deadline?
Missing a tax deadline triggers two potential charges from the IRS: a failure-to-file penalty and a failure-to-pay penalty. The failure-to-file penalty is the steeper one — 5% of your unpaid taxes for each month (or part of a month) your return is late, up to 25%. The failure-to-pay penalty is smaller, at 0.5% per month, but interest compounds daily on top of it.
The good news? If this is the first time you’ve been late, you may qualify for first-time penalty abatement, a little-known IRS programme that can wipe out the failure-to-file and failure-to-pay penalties entirely. You simply need a clean compliance history for the past three years. Call the IRS at 1-800-829-1040 or work with a tax professional to request it.
How does missing a deadline affect retirees specifically?
For retirees, the stakes around tax deadlines go beyond simple penalties. Several retirement income streams interact with your tax bill in ways that can create surprise obligations:
Required Minimum Distributions (RMDs): Under the 2025 and 2026 RMD rules, if you turned 73 by the end of 2025, you must take RMDs from traditional IRAs and 401(k)s each year. These withdrawals count as ordinary income — and if you forgot to account for them on an estimated tax payment, you may now owe more than expected. Missing an RMD itself carries a 25% excise tax (reduced to 10% if you correct it quickly), so make sure your withdrawal is on track, not just your tax filing.
Social Security taxation: Up to 85% of your Social Security benefits can be taxable, depending on your “combined income” (that’s your adjusted gross income plus non-taxable interest plus half your Social Security). If your combined income exceeds $34,000 as a single filer (or $44,000 for couples), 85% of your benefits are subject to federal tax. Many retirees underpay estimated taxes because they forget to factor this in.
Medicare IRMAA surcharges: IRMAA stands for Income-Related Monthly Adjustment Amount — it’s the extra amount higher-income Medicare beneficiaries pay on top of standard premiums. The IRS shares your income data with Medicare, and if a large RMD or one-time income event pushed your income above the threshold two years ago, you could be paying higher Medicare premiums right now. Getting your taxes filed accurately and on time helps avoid unexpected IRMAA surprises in future years.
What should you do right now if you missed the deadline?
Take these steps today, in order:
- File as soon as possible. Even if you can’t pay the full amount owed, file your return immediately. This stops the larger failure-to-file penalty from growing.
- Pay what you can. A partial payment reduces the interest and penalty base right away.
- Set up an IRS payment plan. The IRS offers instalment agreements online at irs.gov. Retirees on fixed incomes often qualify for currently-not-collectible status if paying would cause genuine hardship.
- Request penalty abatement. Ask for first-time abatement by phone or in writing once your return is filed and any balance is paid (or on a payment plan).
- Check your withholding for the rest of 2026. If you receive pension income, Social Security, or IRA distributions, you can request voluntary federal tax withholding to avoid this situation next year.
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When should you claim Social Security to maximise your benefit?
While you’re reviewing your overall retirement finances, it’s worth revisiting your Social Security timing — because the decision ripples through your tax picture for decades. You can claim as early as age 62, but your benefit is permanently reduced by up to 30% compared to your full retirement age (FRA) amount. Wait until age 70, and you earn delayed retirement credits worth 8% per year past your FRA. For many retirees, delaying maximises lifetime income — but the right answer depends on your health, other income sources, and whether a spouse’s survivor benefit is in the picture. A higher Social Security benefit also means more of it may be taxable, so always model both scenarios.
How do I avoid Medicare IRMAA surcharges going forward?
IRMAA surcharges are based on your income from two years prior — so your 2026 Medicare premium is based on your 2024 tax return. The standard Medicare Part B premium for 2025 was $185.00 per month, but IRMAA can push that to over $600 per month for the highest earners. The best strategies to stay under the thresholds include:
- Spreading Roth conversions over several years rather than doing one large conversion
- Timing large RMDs carefully to avoid income spikes
- Using Qualified Charitable Distributions (QCDs) — you can donate up to $105,000 directly from your IRA to charity in 2026, which satisfies your RMD without the amount counting as taxable income
- Filing a life-change appeal with Medicare if your income has dropped significantly due to retirement, divorce, or other qualifying events
What are the RMD rules for 2025 and 2026?
The SECURE 2.0 Act shifted the RMD starting age to 73 for anyone who turned 72 after December 31, 2022, and it will move to age 75 for those born in 1960 or later. For 2025 and 2026, your annual RMD is calculated by dividing your account balance (as of December 31 of the prior year) by an IRS life expectancy factor from the Uniform Lifetime Table. Roth IRAs in your own name are not subject to RMDs during your lifetime, which makes Roth conversions an attractive planning tool for reducing future mandatory withdrawals. Miss an RMD and the penalty is 25% of the shortfall — but correct it within two years and it drops to 10%.
Missing a deadline feels stressful, but it’s fixable. The retirees who fare worst are the ones who do nothing. File today, pay what you can, ask for abatement, and use this moment as a prompt to get your estimated taxes, RMDs, and withholding properly aligned for the rest of 2026.
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Frequently Asked Questions
When should I claim Social Security to maximise my benefit?
Claiming at age 70 gives you the largest possible monthly benefit — up to 32% more than claiming at your full retirement age, and up to 77% more than claiming at 62. The best age depends on your health, other income, and spousal situation, so it’s worth modelling multiple scenarios before deciding.
How much of Social Security is taxable?
Up to 85% of your Social Security benefits can be subject to federal income tax if your combined income exceeds $34,000 as a single filer or $44,000 for married couples filing jointly. Combined income is your adjusted gross income plus non-taxable interest plus half of your Social Security benefit. Some states also tax Social Security, so check your state’s rules.
What are the RMD rules for 2025 and 2026?
Required Minimum Distributions must begin at age 73 for most retirees in 2025 and 2026, with the age rising to 75 for those born in 1960 or later. Your annual RMD is calculated using your prior year-end account balance divided by an IRS life expectancy factor. Missing an RMD triggers a 25% penalty, reduced to 10% if you correct it within two years.
How do I avoid Medicare IRMAA surcharges?
IRMAA surcharges are triggered when your income from two years prior exceeds certain thresholds — for 2026 premiums, that’s your 2024 income. You can reduce exposure by spreading Roth conversions over multiple years, using Qualified Charitable Distributions to satisfy RMDs without raising taxable income, and filing a life-change appeal with Medicare if your income has recently dropped.
What is the Medicare Part B premium for 2025?
The standard Medicare Part B premium for 2025 is $185.00 per month. However, higher-income beneficiaries pay more through IRMAA surcharges, which can push the monthly premium above $600 depending on income level. Premiums are deducted directly from your Social Security payment if you receive benefits.