Can I Retire at 70? A Financial Feasibility Guide

Retire at 70 — Portfolio Longevity Calculator

With Social Security at its maximum, the core question is how long your portfolio lasts at your desired spending level. Enter your numbers below to see projections across three return scenarios. All inputs stay in your browser.

Your Social Security Is Fully Maximized at 70

The delayed retirement credit (DRC) accrues at 8% per year beyond full retirement age, up to and including age 70. After 70, no additional credits accumulate — meaning there is no financial benefit to delaying SS enrollment beyond your 70th birthday.¹ If you haven't filed yet and you're already 70, do it now.

For everyone born in 1960 or later, FRA is 67. The total benefit accumulation by age 70:

Source: SSA.gov — Retirement Planner, Delayed Retirement Credits. FRA = 67 for all born 1960 or later.¹

Compared to claiming at 62, waiting until 70 yields $1,512/month more in the example above — a 77% increase. Compared to claiming at FRA (67), the 3-year wait earns $672/month more (24% higher). These are permanent, inflation-adjusted increases that compound via annual COLAs for the rest of your life, and the survivor benefit paid to a spouse is based on the same maximized amount.

The breakeven on having waited from 67 to 70

By delaying from 67 to 70, you forgo 36 months of SS income. Using the $2,800 FRA benefit example: 36 months × $2,800 = $100,800 foregone. The extra $672/month pays that back in 150 months (12.5 years). If you started SS at 70, you recover the deferred benefit by approximately age 82½. Every year you live past 82½, you come out ahead in cumulative lifetime benefits.

At 70, in good health, the remaining life expectancy is roughly 15–17 more years — well past the 12.5-year breakeven. The math validated the decision to wait. Now retire.

The Urgent Roth Conversion Window: 3 to 5 Years Left

This is the most time-sensitive planning issue for someone retiring at 70. Required minimum distributions begin at age 73 for those born 1951–1959, and at 75 for those born in 1960 or later (SECURE 2.0 § 107).² That leaves only 3 or 5 years — the shortest Roth conversion window of any retirement age in this series.

During those years, before RMDs arrive and force large taxable distributions from traditional accounts, your taxable income may be the lowest it will be for the rest of your life. Even with SS income (up to 85% of which is taxable above the threshold), you likely have meaningful room in the 12% or 22% bracket. Every dollar converted from traditional IRA or 401(k) to Roth during this window:

• Grows and distributes tax-free for life (no future RMDs on Roth IRAs)
• Reduces your future traditional account balance and thus future forced RMD distributions
• Reduces Medicare's MAGI for IRMAA purposes — Roth distributions are IRMAA-invisible
• Passes to heirs more efficiently under the inherited IRA 10-year rule

How much to convert each year

The standard technique is bracket-fill: convert traditional IRA funds up to the top of your current tax bracket without crossing into the next one or triggering an IRMAA tier jump.

2026 MFJ bracket thresholds from IRS Rev. Proc. 2025-32. IRMAA 2026 Tier 1: single $109,000 / MFJ $218,000 — CMS.³

Example: 3-year window, $900K traditional IRA at 70

A 70-year-old (born 1952, RMDs start at 73) with $900,000 in a traditional IRA and $41,664/yr in SS (85% inclusion = ~$35,400 taxable) and no other income has roughly $50,000–$65,000 of 12%-bracket space each year. Converting $55,000/year for 3 years moves $165,000 out of the traditional account — reducing the eventual RMD balance from $900,000+ to ~$735,000, and meaningfully lowering lifetime tax exposure.

A 70-year-old with the 5-year window (born 1960) has more room. $55,000/year for 5 years converts $275,000, reducing that same $900K IRA to $625,000 before RMDs begin — a dramatically smaller forced-distribution tax burden at 75.

Use our Roth conversion calculator to model your specific bracket position, and our RMD calculator to see what distributions will look like if you do vs. don't convert.

Withdrawal Rate at 70: Shorter Horizon, More Flexibility

The 4% rule was calibrated for a 30-year horizon. Retiring at 65 fits that calibration. At 70, the standard planning horizon is approximately 22 to 25 years — to roughly age 92 to 95. This slightly shorter horizon actually allows for a modestly higher initial withdrawal rate while maintaining the same probability of success.

*Based on Bengen (1994) and Morningstar 2026 guidance (3.9% baseline for 30-yr horizon). Rates assume a diversified stock/bond portfolio. Individual outcomes vary with sequence of returns.

In practical terms: a $1.2 million portfolio at 70 can support approximately $51,600–$54,000/year in inflation-adjusted withdrawals with high confidence of lasting through the mid-90s — before any Social Security or pension income. With a maximized SS benefit of $41,000–$50,000/year already locked in, the portfolio's role is to supplement SS rather than carry the full load. This is a fundamentally different and more durable position than retiring at 62 or 65.

Two important caveats:

• RMDs override your withdrawal plan at 73 or 75. Once required minimum distributions begin, your traditional IRA and 401(k) force a minimum withdrawal regardless of what you planned. If your RMDs exceed your spending need, the excess goes into taxable savings — but it also increases your IRMAA exposure and may push SS income further into taxable territory. See our RMD projection calculator and tax minimization guide.
• Sequence of returns still matters, even at 70. A major market decline in the first 3–5 years of retirement can impair a portfolio even with shorter horizons. The bucket strategy — keeping 1–2 years of spending in cash — is a practical buffer that lets you avoid selling equities in a down year.

Medicare Considerations When You Retire at 70

Most people retiring at 70 have been on Medicare since 65. But there is an important exception: if you continued working past 65 with active employer group health coverage, you may have legitimately deferred Part B enrollment. If that's your situation, pay attention to the enrollment window.

If you delayed Part B enrollment through employer coverage

Employees who remained on qualifying employer group coverage past 65 can defer Medicare Part B without penalty. When employment ends (at retirement), you have an 8-month Special Enrollment Period (SEP) to sign up for Part B without a late enrollment penalty.⁴ Miss that 8-month window and the penalty is permanent: an extra 10% of the Part B premium added for every 12-month period you were eligible but not enrolled.

At 70, the 2026 standard Part B premium is $202.90/month. If you're enrolling for the first time at retirement, file the SEP application promptly to avoid any risk of being caught outside the window.

IRMAA at 70: income from your last working year

Medicare's IRMAA surcharge is based on income from two years prior. Your 2026 Part B premium is based on your 2024 tax return. If you worked into 2024 or early 2025 at a high salary, you may be paying an IRMAA surcharge during your first year or two of retirement — based on income you no longer have.

2026 IRMAA thresholds and Part B premiums — CMS.³ Surcharges apply per person; married couples each pay the applicable surcharge.

If you retired in 2024 or 2025, file Form SSA-44 to request a reduction based on your current retirement income rather than the high-income year. See our IRMAA appeal guide — this form routinely saves retirees $1,000–$5,000+ per year in the first two years of retirement.

Going forward, keep IRMAA thresholds in mind as you plan Roth conversions. The Tier 1 threshold is $109,000 single / $218,000 MFJ. A large conversion year that pushes above a tier costs $86.30/month in extra Part B premiums two years later. Plan your conversions in the context of your 2-year-forward IRMAA projection. Our IRMAA calculator models the tiers against your projected income.

OBBBA Senior Deduction: $6,000 Above-the-Line for Ages 65+

The One Big Beautiful Bill Act (signed July 2025) created a new $6,000 above-the-line deduction for taxpayers age 65 or older, available for tax years 2025–2028.⁵ At 70, you qualify automatically.

OBBBA § 70301 (P.L. 119-21, July 2025). Phases out at 6% of excess AGI over threshold. Available 2025–2028.⁵

For most 70-year-olds with AGI below $175,000 (single) or $250,000 (MFJ), the full $6,000 is available. This reduces taxable income and may keep Roth conversion amounts in a lower bracket. It also slightly reduces Medicare's MAGI for IRMAA, though it typically doesn't move you across a tier on its own. See our OBBBA guide for the full interaction with conversion planning.

Common Mistakes When Retiring at 70

1. Delaying SS enrollment after turning 70

The delayed retirement credit stops accruing at 70. There is no benefit whatsoever to waiting past 70 to file for Social Security. Every month you delay past your 70th birthday is benefits permanently left uncollected. If you're already past 70 and haven't filed, do it immediately — you can request up to 6 months of retroactive benefits, but no more.

2. Treating the Roth window as non-urgent

With only 3 to 5 years before RMDs begin, the Roth conversion window at 70 is the most compressed of any retirement age. Many retirees move slowly in the first few years, focusing on adjustment to retirement life — and find themselves facing large RMDs with no remaining opportunity to reduce the traditional IRA balance. The time to convert is in year one, not year three.

3. Forgetting to file SSA-44 after high-income working years

If you earned a high salary in your last year or two of work, Medicare's 2-year lookback means you're paying elevated IRMAA surcharges based on income you no longer have. Form SSA-44 allows you to report the life-changing event (work retirement or reduction) and request premiums be recalculated on your current retirement income. This is worth doing even if you think you might only save one tier.

4. Under-weighting equities given a 22-25 year horizon

Many retirees at 70 assume their age calls for a very conservative portfolio — 30% stocks or less. But a 22-to-25-year retirement horizon requires meaningful equity exposure to preserve purchasing power. Research by Kitces and Pfau suggests a rising equity glidepath (starting conservative and adding equities over time) actually outperforms a declining one in many historical periods. See our retirement asset allocation guide for the framework.

5. Ignoring the RMD coordination with Social Security taxation

When RMDs start at 73 or 75, they add to your income — potentially pushing more of your SS into taxable territory (up to 85% inclusion above the combined income threshold). Large RMDs also trigger IRMAA surcharges two years out. Planning RMD amounts in advance — and using the Roth conversion window to reduce future distributions — is how you avoid the "RMD tax torpedo" that hits many 73-to-80-year-olds who didn't plan for it. Our SS tax calculator and RMD projection tool model both effects.

6. Missing the Part B SEP window if you just left employer coverage

If you worked past 65 on employer group health insurance and deferred Medicare Part B, you have exactly 8 months from your last day of employer coverage to enroll without penalty. Miss this window and the 10%-per-year-unenrolled penalty applies permanently. Don't assume you can enroll during the General Enrollment Period (January–March) without penalty — that window is for people who missed their entire initial eligibility period with no qualifying coverage.

Sources

1. SSA.gov — Delayed Retirement Credits. Delayed retirement credits accrue at 8%/year beyond FRA, up to age 70. No additional credits accrue after age 70. FRA = 67 for individuals born 1960 or later. Values verified June 2026.
2. SECURE 2.0 Act of 2022, § 107 — RMD age raised to 73 for individuals born 1951–1959; raised to 75 for individuals born 1960 or later. IRS RMD FAQs. Verified June 2026.
3. Centers for Medicare & Medicaid Services — 2026 Part B Premium and IRMAA. Standard Part B = $202.90/month. IRMAA Tier 1 single $109,000 / MFJ $218,000. Verified June 2026.
4. CMS — How and When to Sign Up for Medicare. Special Enrollment Period: 8 months after employer coverage ends. Late enrollment penalty: 10% per 12-month period unenrolled. Verified June 2026.
5. One Big Beautiful Bill Act (P.L. 119-21, signed July 2025), § 70301 — $6,000 senior deduction for taxpayers age 65+, available tax years 2025–2028. Phaseout: single $75K–$175K AGI / MFJ $150K–$250K AGI. Phases out at 6% of excess AGI.

All dollar amounts, tax brackets, and benefit percentages reflect 2026 rules as verified against IRS, SSA, and CMS sources. Social Security Fairness Act (January 2025) repealed WEP and GPO — government-worker SS benefits are no longer reduced by those provisions. Bengen (1994) and Morningstar 2026 Safe Withdrawal Rate research referenced for withdrawal rate guidance.