Optimize: Social Security Claiming Ages
When to claim Social Security is one of the highest-stakes calls in retirement — the difference between 62 and 70 can be six figures over a lifetime, and for couples the combinations multiply. Instead of testing ages by hand, let the Optimizer search them and rank the results by what you care about.
First read the Optimizer overview for how searches work and what to expect. Background on benefits: Social Security.
Set it up
- Make sure your Social Security estimates are entered first. The Optimizer sweeps the claiming age, but it needs your benefit estimates to price each one. Enter them on the Household tab — your estimated monthly benefit at 62, Full Retirement Age, and 70 — from your Social Security statement at ssa.gov (sign in to, or create, your free my Social Security account to see your personalized numbers). The engine interpolates every other claiming age from those three, so without them the search has nothing to work with.
- On the Optimizer, add Social Security claim age as a dimension. For a couple, add it for both people — the Optimizer will explore the combinations.
- Set the range to search (typically 62 through 70).
- Choose your objective — and note that the "best" age depends on which you pick:
- Maximize success rate — the age(s) that make the plan most durable.
- Maximize lifetime Social Security received — tends to favor delaying.
- Maximize after-tax legacy — balances income against what’s left.
- Optionally add a constraint (e.g., success rate ≥ 90%).
What to expect
A single person’s claiming sweep is quick — only a handful of candidates. A couple’s is a small grid (each age against the other, at most 81 combinations), so it still comes back fast — one of the quickest optimizer searches there is, not the many-minutes-to-hours a big multi-variable search can take.
Reading the results
- The best age shifts with your goal and your longevity. Try it with mortality modeling on at different life expectancies — delaying wins more the longer you live; claiming early wins if life is shorter.
- Protect the survivor. Because the surviving spouse keeps the larger benefit, optimizing with a death event modeled often pushes the higher earner to delay. Don’t optimize claiming in a vacuum — see what if my spouse dies first?
- Confirm finalists on the Compare tab if two ages score within a point or two of each other.
Why the Optimizer can settle this and a rule of thumb can’t
"Delay if you can" is the standard advice, and it’s often right — but not always, and the reason is easy to miss.
Your withdrawal target is total household spending, so Social Security reduces what comes out of your accounts dollar for dollar (see Strategy tab). Every year you delay is a year your portfolio covers the whole target alone. The Optimizer is worth running here precisely because it prices that cost against the bigger later benefit — using your portfolio, your spending, and your tax picture — instead of assuming an answer.
Four forces pull against each other, and no rule of thumb can weigh them for your numbers:
| Pulls toward claiming earlier | Pulls toward delaying |
|---|---|
| Larger portfolio draws during delay years, right when sequence risk is worst | A permanently larger, inflation-adjusted, government-backed benefit |
| A tighter portfolio may not absorb several years of unsupported withdrawals | A bigger check protecting the surviving spouse for life |
| Shorter expected longevity | Spending down Traditional balances early shrinks later RMDs, taxes, and IRMAA exposure |
How to actually run the decision:
- Optimize for success rate first. That answers "which ages keep the plan durable?" — the question that matters most if the delay-years drawdown is a real strain.
- Re-run for after-tax legacy. If a later age wins here but an earlier one wins on success rate, you’re seeing the trade-off directly: the delay buys more lifetime value but costs near-term resilience.
- Turn mortality modeling on. Claiming age is a longevity bet; optimizing without a death event models only one side of it.
- Check the RMD effect. Compare the tax and RMD charts between a delayed and an early candidate. Delaying often lowers RMDs later by drawing Traditional down sooner — a benefit that never shows up in a benefit-only comparison.
- Confirm the finalists on Compare so the winner isn’t decided by a point or two of noise.
If success rate barely moves across the range, that’s a real answer too: your plan isn’t sensitive to claiming age, and you can decide on other grounds — cash-flow comfort, peace of mind, or leaving the market earlier.
Caveat
Your SSA statement estimates assume you keep working until you claim. If you’ll retire earlier, lower the entered estimates a bit so the optimization reflects your real benefit.
For the manual version of this exploration, see collecting Social Security early.
RetireRange is for educational and planning purposes only and is not financial, tax, or investment advice. Optimizer rankings are modeled estimates based on your assumptions — not predictions or recommendations. Consult a qualified financial planner for advice specific to your situation. See Limitations.