Between 67 and 70, Social Security Pays You a Guaranteed 8% a Year Just to Wait. No Bank on Earth Matches It

If you’re between 66 and 70 and haven’t filed for Social Security yet, the federal government is quietly paying you a guaranteed raise every month you wait. Between your full retirement age of 67 and the day you turn 70, your future benefit grows by about 8% per year. That is the delayed retirement credit, and it beats every risk-free product a bank can sell you right now.

The Buried Rule

Here is what the Social Security Administration does not put on your annual statement in bold: for every month you delay claiming your retirement benefit past your full retirement age (FRA), your monthly check is permanently increased by two-thirds of 1%. Stack twelve of those months together and you get 8% more per year, locked in for life, adjusted for inflation on top. Wait the full three years from 67 to 70 and your check is 24% larger, forever. And Social Security still tacks on the annual cost-of-living adjustment while you wait, which was set at 2.8% for 2026.

The Proof

The delayed retirement credit is written into Section 202(w) of the Social Security Act (codified at 42 U.S. Code §402(w)) and detailed in SSA Publication No. 05-10147, Delayed Retirement Credits. For anyone born in 1943 or later, the statutory credit rate is 2/3 of 1% per month, or 8% per year. This is a fixed statutory formula applied to your Primary Insurance Amount.

Who Qualifies, Who Doesn’t

You qualify if you were born in 1960 or later (making your FRA 67), you have earned your 40 quarters of coverage, and you have not yet filed for your own retirement benefit. The credit accrues month by month between FRA and the month you turn 70.

Who is shut out: spouses drawing a spousal benefit off someone else’s record. Spousal benefits do not earn delayed retirement credits, so a non-working spouse waiting past FRA gains nothing. Survivor benefits do inherit the higher-earner’s credits, which is why the delay decision often matters most for the higher earner in a couple. People already collecting cannot go back and claim the credit either, though there is a narrow 12-month withdrawal window on new claims.

How to Use It

1. Pull your latest benefit estimate at SSA.gov. Note the projected monthly amount at 67 and at 70.
2. Compare the gap to what your cash could earn in the safest alternative. The national average 12-month CD pays 1.65%. The 10-year Treasury yields 4.55%. The Fed funds upper bound sits at 3.75%. Nothing guaranteed touches 8%.
3. If you have other income (a bridge job, a Roth, taxable savings), spend those first between 67 and 70 while your Social Security compounds behind the scenes.
4. File the month you turn 70. There is zero reason to wait longer. Credits stop accruing the month you hit 70.
5. Coordinate with a spouse. Have the higher earner delay to lock in the biggest survivor benefit; the lower earner can often claim earlier.

Want to see the trade-off for your own numbers?

Plug in your projected FRA benefit and your realistic life expectancy to see the crossover age where waiting wins.

The Catch

Three traps sink most people. First, the credit stops the moment you turn 70. Waiting to 71 gains you nothing but lost checks. Second, the 8% is applied to your Primary Insurance Amount, so it is simple, not compounded; the headline number is still real, but do not expect it to snowball. Third, break-even math matters. If you are in poor health or have a short family longevity history, delaying can leave money on the table. Roughly speaking, if you don’t expect to live past your early 80s, filing at FRA often wins.

And a fourth quiet issue: your Medicare Part B premium can be pulled from your Social Security check once you file. Delaying means you’ll pay Part B out of pocket starting at 65. Budget for it.

With CPI running at 332.6 as of June 2026 and bank yields nowhere near 8%, the delayed retirement credit remains the single best guaranteed return most Americans will ever be offered. The only question is whether you can afford to skip the paychecks between 67 and 70 to collect it.

Contact [email protected] for any questions or corrections.