Everything in today's money (real terms) — enter inflation-adjusted returns and no separate inflation input is needed.
| Bucket | Today | Share | Notes |
|---|
| Account | Tax treatment | Current balance | Contribution / yr | Count toward FIRE | At retirement |
|---|---|---|---|---|---|
| Counted total | |||||
| All rows |
| Tier | Annual spend | FIRE number | Coast # today | Coast age | FIRE age |
|---|
| Age | Coast number needed | Projected balance | Surplus / gap |
|---|
| Age | Spend need | Other income | RMD | Tax + penalty | Taxable | Pre-tax | Roth / HSA | Total |
|---|
FIRE number = annual spending ÷ withdrawal rate (or your own target).
Coast number at age a = FIRE number ÷ (1 + r)(retirement age − a).
Drawdown each year: any RMD first, then taxable (taxing only the gain share), then pre-tax grossed up for tax plus a 10% penalty before 59½, then Roth/HSA.
Ignored: progressive brackets, the 0% long-term gains bracket, state tax, NIIT, IRMAA, Roth conversion ladders, ACA subsidies, Social Security taxation, salary growth, and sequence-of-returns risk.
Claiming early permanently reduces the benefit: 5/9 of 1% per month for the first 36 months before full retirement age, then 5/12 of 1% per month beyond that. Delaying past full retirement age adds 2/3 of 1% per month — 8% a year — up to age 70. There is no credit for waiting past 70.
Not modelled: the earnings test if you claim early while still working, spousal and survivor benefits, and federal taxation of up to 85% of benefits.
| Claim age | % of PIA | Monthly | Annual | Total by 90 | Breakeven vs 62 |
|---|
| Debt | Balance | APR % | Minimum / mo | Mortgage | Payoff order | |
|---|---|---|---|---|---|---|
| Total | ||||||
| Strategy | Debt-free in | Total interest | Difference |
|---|
| Component | Amount | What it covers |
|---|
Educational tool, not financial, tax, insurance, or legal advice. IRS figures are the 2026 limits (Notice 2025-67, Rev. Proc. 2025-19); Social Security rules follow SSA's published reduction and delayed-credit formulas.