Using the Optimizer to Answer Common Questions

The other Optimizer pages are organized by decision ("how to optimize Social Security," "how to optimize your withdrawal rate"). This one is organized by the question you’re actually asking. Find the question that sounds like yours, and it tells you exactly what to set up, what to optimize for, and how to read the answer.

Read first: the Optimizer overview explains how searches work, why big searches take a while, and the sampling/budget settings. This page assumes you know that and focuses on which run answers which question.

The one rule that governs all of these: anchor on success rate first, then use legacy or taxes as a tiebreaker within the plans that are durable enough. A result that looks great on taxes or legacy but fails too often isn’t a good plan — it’s a fragile one. More on that trap in each scenario below.

Vary: Social Security claim age (add it for both spouses so the Optimizer explores the combinations).
Range: 62–70.
Optimize for: success rate first. Then, separately, try after-tax legacy and lifetime Social Security received to see how the "best" age shifts with your goal.
Watch for: with a death event modeled, protecting the survivor usually pushes the higher earner to delay — because the survivor keeps the larger benefit. Don’t optimize this in a vacuum.
Cost: cheap — one of the fastest searches.

→ Full guide: Optimize Social Security claiming ages · Manual version: collect Social Security early

"How much can I safely spend?"

Vary: withdrawal rate, and (optionally) withdrawal method — Classic, Dynamic, Guardrails.
Optimize for: success rate, or set a constraint ("success ≥ 90%") and then maximize median legacy within that. That second framing answers the real question: the most I can spend while still keeping the plan durable.
Watch for: the highest spending rate will always "win" on income and lose on success — that’s why you constrain success first. Don’t read a low Lifetime Taxes Paid as good here; taxes fall when the portfolio depletes faster.
Cost: moderate; rate alone is quick, adding method multiplies it.

→ Full guide: Optimize withdrawal rate & method · Related: spend more in retirement

"How much should I convert to Roth, and when?"

Vary: Roth conversion amount (over the year range you set on the Strategy tab).
Optimize for: after-tax legacy or success rate — not lifetime taxes. Converting deliberately raises taxes now to lower RMDs and heir taxes later, so a "minimize taxes" objective would reject exactly the strategy you’re testing.
Watch for: conversions interact with IRMAA and your tax bracket in the conversion years; the win shows up in what your heirs keep after tax, not in a lower tax bill for you.
Cost: moderate.

→ Full guide: Optimize Roth conversion amounts · Background: Roth conversions, RMDs

"Which accounts should I draw from first?"

Vary: account-type withdrawal allocation (the order and mix you pull from — Traditional, Roth, taxable, and so on).
Optimize for: after-tax legacy or success rate. Withdrawal sequencing is one of the quietest six-figure decisions in retirement.
Watch for: the best order often changes once conversions or RMDs are in the picture — consider optimizing allocation after you’ve settled a conversion plan, or combine them in one search if you can afford the run time.
Cost: moderate to high depending on how many account types you have.

→ Full guide: Optimize account-type allocation

"Would moving to a lower-tax state actually help — and when?"

Vary: filing state, and move year.
Setup: no special target needed — the engine draws your actual state tax from the portfolio under every withdrawal target, so a move changes your ranked legacy whatever target you’re using.
Optimize for: after-tax legacy.
Watch for: the modeled state tax runs slightly high in some states (pension/military exemptions and local taxes aren’t deducted), so treat the relative comparison between states as more reliable than the absolute dollar figure.
Cost: low to moderate.

→ Full guide: Optimize where and when to move · Manual version: moving in retirement

"How long should I keep contributing — can I stop early?"

Vary: contribution end year, and contribution amount %.
Required setup: at least one account must have an ongoing contribution rule (any account type — 401(k), IRA, taxable, HSA…), or these dimensions won’t appear. Add one on the Accounts tab if needed.
Optimize for: success rate — this answers "how much do these last few years of saving actually buy me?"
Watch for: the marginal value of one more year of contributions often surprises people in both directions. Pair it with the manual test below.
Cost: low to moderate.

→ Related manual test: stop contributing to my 401(k)

"Which decision should I even focus on?"

The Optimizer finds the best value for a decision you’ve chosen. It doesn’t tell you which decision matters most for your plan — that’s a different question, and a different tool.

To find which lever moves your outcome most, run the Sensitivity Analysis (tornado chart) first. It ranks your assumptions and decisions by impact.
Then bring the top one or two into the Optimizer and search them properly.

That order — sensitivity to find what matters, Optimizer to tune it — saves you from spending an hours-long multi-variable search on a decision that barely moves the needle.

Combining questions in one run

You can vary several decisions at once (say, claiming age and withdrawal rate and conversions), but a full grid grows explosively — every added dimension multiplies the work. When you combine:

Go coarse, then fine — a wide low-resolution sweep to find the promising region, then a tight search around it.
Use Latin Hypercube Sampling for big spaces, and set a candidate budget cap.
Lower the simulation count while exploring, then confirm finalists at full precision.

Details and the full settings are in the Optimizer overview.

The last step, every time

The Optimizer narrows the field; the Compare tab picks the winner. Because the Optimizer evaluates candidates in batches that use different random market sequences, two candidates within 1–2 percentage points of each other on success rate might just be noise. Save your top few as named strategies and re-run them on the Compare tab, which puts them against the exact same market sequences for a clean, apples-to-apples decision.

And remember what a ranking is and isn’t: it’s a modeled estimate based on the assumptions you entered — a sharper starting point for your thinking or your next advisor conversation, never a recommendation about what you should do.

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.