If You Have $380,000 Saved at 66 and $2,400 a Month in Social Security, Here Is the Income You’ll Actually Be Able to Count On
Claiming Social Security at 67 feels like the safe move, but the math behind a three-year delay tells a more complicated story about which path actually protects your income for life.
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Let’s say you’re 66, and your full retirement age of 67 is a few months away. Now imagine that you have $380,000 in an IRA. The best case is that Social Security says your check will be $2,400 a month at 67, or about $2,240 if you file now. The real question is how much you can safely spend each month, and whether to claim soon or wait.
It should go without saying that far too many retirees face this exact choice. AARP now promotes a “bridge strategy”: you live on IRA or 401(k) money first so you can delay Social Security and lock in a bigger check. Your numbers show why the idea keeps coming up.
Why Your Social Security Check Outranks Your IRA
Your IRA is the only money you control. Your Social Security check is the only income that lasts as long as you do and gets inflation raises. The 2027 cost-of-living adjustment (COLA) is 3.6%, but raises like this aren’t guaranteed. For example, there was no COLA in 2010, 2011, or 2016. Still, an IRA withdrawal never gets a raise on its own. Every dollar of lifetime income you shift from the IRA into Social Security becomes a dollar that can’t run out.
Path A: Claim at 67 and Draw 4% From the IRA
A 4% withdrawal from the IRA is about $1,267 a month. Add the $2,400 benefit and your gross income is $3,667. Taxes stay small, but the IRS adds half your benefit to your other income to get “provisional income.” Here, that comes to $29,600, just above the $25,000 base amount for single filers under 26 U.S.C. § 86(c)(1)(A). As a result, only about $2,300 of your benefits are taxable.
The 2026 single standard deduction is $16,100. On top of that, there’s a $6,000 senior deduction for tax years beginning before January 1, 2029 (26 U.S.C. § 151(d)(5)(C)). Together they push your federal tax close to zero.
Medicare is the higher cost, as Part B runs $202.90 a month in 2026, and a Medigap or Medicare Advantage plan adds $150 to $350. That leaves roughly $3,114 to $3,314 a month to spend.
Path B: Let the IRA Carry You Until 70
If you wait until 70, your benefit grows to $2,976. Until then, you live on $34,000 a year from the IRA, about $102,000 over three years. During those years, taxable income after both deductions is about $11,900. That sits inside the 10% bracket, which tops out at $12,400.
Keep the bridge money safe. Treasury yields are about 4.5% for one year and 4.8% for three years. The national average 12-month CD pays just 1.7%. At 70, a 4% draw on the roughly $278,000 left adds about $930 a month, for $3,906 gross. Provisional income of about $28,976 keeps tax near zero. After Medicare, you’d have about $3,353 to $3,553 a month.
| Item | Path A (Claim at 67) | Path B (Claim at 70) |
|---|---|---|
| Social Security | $2,400 | $2,976 |
| IRA draw | $1,267 | $930 |
| Gross monthly | $3,667 | $3,906 |
| After Medicare | $3,114 to $3,314 | $3,353 to $3,553 |
Where Waiting Wins, and Where It Loses
Skipping three years of checks costs you $86,400. The extra $576 a month earns that back around age 82. If you live past that, Path B pulls further ahead every year, and COLAs protect more of your income. Path B loses if you die early or need a large sum in your late 60s, since your IRA will be about $100,000 smaller by 70.
If you’re married, the case for waiting gets stronger. When the higher earner dies, the surviving spouse keeps the larger of the two checks. If that’s you, delaying also raises your spouse’s income for the rest of their life. For a healthy 66-year-old with a separate emergency fund, Path B is the better default. Path A is right if your health or family history suggests a shorter life, or if the IRA is your only buffer against big expenses.
What to Settle Before Your 67th Birthday
Before you turn 67, start with two questions. First, do you realistically expect to live into your mid-80s? The second is whether you have cash outside the IRA for emergencies. If both answers are yes, waiting until 70 gives you the most lifetime income you can’t outlive.
The costliest mistake is filing now at the default $2,240. That locks in a smaller check for life and, if you’re married, a smaller survivor benefit.
If you’re married and your earnings records differ a lot, paying a planner who charges only by the hour is worth it. Spousal and survivor benefits interact in ways a single-person breakeven can’t account for. Running both records through claiming software can change which spouse should wait.
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David Beren has been a Flywheel Publishing contributor since 2022. Writing for 24/7 Wall St. since 2023, David loves to write about topics of all shapes and sizes. As a technology expert, David focuses heavily on consumer electronics brands, automobiles, and general technology. He has previously written for LifeWire, formerly About.com. As a part-time freelance writer, David’s “day job” has been working on and leading social media for multiple Fortune 100 brands. David loves the flexibility of this field and its ability to reach customers exactly where they like to spend their time. Additionally, David previously published his own blog, TmoNews.com, which reached 3 million readers in its first year. In addition to freelance and social media work, David loves to spend time with his family and children and relive the glory days of video game consoles by playing any retro game console he can get his hands on.
