When Can I Retire? Retirement Readiness Calculator

Enter your current savings, annual contributions, retirement spending goal, and Social Security estimate. This calculator projects your portfolio year by year and identifies the earliest age at which your savings can sustainably fund your retirement.

Current age

Current retirement savings ($) Total across 401(k), IRA, Roth, taxable — all investment accounts

Annual savings contributions ($/yr) What you add to all retirement accounts each year until you retire

Pre-retirement portfolio return (%/yr, nominal)

Annual retirement spending goal ($/yr) Total spending in today's dollars. $72,000 = $6,000/month including healthcare, housing, travel.

Expected Social Security income ($/yr) Annual SS at your planned claiming age. $28,000 ≈ $2,333/month. Check your my Social Security statement at ssa.gov. Enter 0 if uncertain or self-employed with low SS.

Planned SS claiming age The SS amount above should already reflect your chosen claiming age. If retiring before this age, your portfolio covers full spending until SS starts.

Sustainable withdrawal rate (%/yr) Portfolio draw as % of portfolio. 4% = Bengen rule for 30-yr horizons. Use 3.5% for 35+ years or higher equity volatility. Use 4.5–5% with Guyton-Klinger guardrails.

How the "when can I retire?" calculation works

Retirement readiness has two moving parts: how large does your portfolio need to be? and when will it get there? This calculator solves both simultaneously.

Your savings target (the "number")

The required portfolio size is determined by how much your savings must cover each year after Social Security:

Net portfolio draw = annual spending − annual Social Security income
Required portfolio = net draw ÷ withdrawal rate

Example: $72,000 spending − $28,000 SS = $44,000 net draw. At 4.0% withdrawal rate, target = $44,000 ÷ 0.04 = $1,100,000. That's your number.

If you plan to retire before Social Security starts, your portfolio must cover full spending until SS begins. The calculator handles this by using the pre-SS target until you reach your claiming age, then switching to the lower post-SS target. Retiring before SS typically adds 10–20% to the required portfolio.

The portfolio projection

Each year before retirement, your portfolio grows by the pre-retirement return rate and receives your annual contributions. The math uses compound growth: existing savings compound at the assumed rate, and new contributions compound from the year they're added. When the projected portfolio line crosses the required target line, you've reached your retirement date.

Withdrawal rate and planning horizon

The withdrawal rate encodes how long your money needs to last:

Withdrawal rate	Planning horizon	Historical success rate
3.0%	40+ years (retire at 50-55)	Near 100% historically
3.5%	35+ years (retire at 55-60)	~98% across 1926-2020 data
4.0%	30 years (retire at 60-65)	~96% — the Bengen benchmark
4.5–5.0%	25-30 years, with spending flexibility	~90–95% with guardrail rules

Key variables that move your retirement date

Variable	Typical effect on retirement date
Annual savings rate	Doubling contributions (say $20K → $40K/yr) often pulls the retirement date 2–4 years earlier.
SS claiming age	Delaying SS to 70 raises the benefit ~24–32% vs FRA — permanently reducing how much your portfolio needs to cover. Often worth 1–2 years earlier work retirement even though you wait for SS.
Spending level	Cutting spending $6,000/yr reduces your required portfolio by $150K (at 4% WR) — while also letting the portfolio grow faster. Can move the date 1–3 years.
Withdrawal rate	Raising from 3.5% to 4.5% reduces required portfolio by $286K on $40K net draw — meaningful for someone 3–5 years out. Offset by higher sequence risk over longer horizons.
Pre-retirement return	1% higher expected return compounds significantly on existing savings. On $750K growing at 7% vs 6%, the 10-year gap is ~$175K — often 1–2 years of difference.

What this calculator doesn't capture

This calculator gives you the essential ballpark but omits several factors that a full retirement plan must address:

Taxes on withdrawals. Traditional IRA/401(k) withdrawals are taxable income. A $72,000 spending target may require $82,000–$90,000 in gross withdrawals depending on your bracket and account mix. A specialist advisor can model tax-efficient withdrawal sequencing to close this gap.
RMDs starting at 73 or 75. Required minimum distributions force taxable withdrawals whether you need them or not — and can push you into higher brackets or IRMAA tiers. Model your RMD trajectory here.
Sequence-of-returns risk. A portfolio earning 7% annually on average can still be depleted if it falls 30% in year one of retirement. This calculator uses a flat return assumption. The Monte Carlo calculator shows probability-weighted outcomes across 500 randomized sequences.
Healthcare costs pre-Medicare. If you retire before 65, private insurance can run $15,000–$25,000/year. For early retirees, this alone can shift the target by $375K–$625K (at 4% WR). Full healthcare cost guide.
Inflation. This calculator uses nominal numbers. At 3% annual inflation, $72,000 of spending today requires $97,000 in 10 years. Build in a buffer, or use a real (after-inflation) return rate if you prefer to think in today's dollars.
Roth conversion opportunity. The pre-retirement years are often the best window for converting traditional IRA funds to Roth at favorable tax rates. The Roth conversion calculator shows how much conversion potential you may have.

Why advisors often find 2–4 years of hidden readiness. A specialist retirement income advisor can combine Roth conversion timing, tax-efficient withdrawal ordering, Social Security optimization, and income flooring to close the readiness gap without changing your portfolio. If this calculator says you're 5 years out, a good plan might make it 3. See if you qualify for matching.

Related calculators

Retirement Income Sustainability Calculator — once you're retired, will your money last?
Monte Carlo Retirement Simulation — probability-weighted outcomes across 500 return sequences
Guyton-Klinger Guardrails Calculator — dynamic spending rules that may support a higher withdrawal rate
Social Security Break-Even Calculator — compare 62 vs FRA vs 70 claiming strategies
Roth Conversion Window Calculator — how much to convert before RMDs start

Get a complete retirement readiness plan

This calculator shows you the math. A specialist advisor shows you the strategies — Roth conversion timing, Social Security claiming optimization, tax-efficient sequencing — that can meaningfully accelerate your retirement date or extend how long your money lasts once you're there.

Fee-only · No commissions · Free match · No obligation

Sources

Bengen, W. P. (1994). Determining Withdrawal Rates Using Historical Data. Journal of Financial Planning, 7(4), 171–180. Origin of the 4% withdrawal rate rule and its 30-year horizon benchmark, based on U.S. equity and bond returns from 1926 onward. Link
Cooley, P. L., Hubbard, C. M., & Walz, D. T. (1998). Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable. AAII Journal (Trinity Study). Documented historical success rates across withdrawal rates, portfolio allocations, and time horizons — the empirical foundation behind "the 4% rule holds for 30 years." Link
Pfau, W. D. (2011). Safe Savings Rates: A New Approach to Retirement Planning over the Life Cycle. Journal of Financial Planning. Reframes retirement readiness as a savings-rate problem rather than a withdrawal-rate problem — identifying how much to save to sustain a given withdrawal rate over a full career and retirement.
Social Security Administration. (2026). Understanding the Benefits. SSA Publication No. 05-10024. Documents FRA by birth year (66 for born 1943–1954, gradually rising to 67 for born 1960+), delayed retirement credits (8%/year past FRA to age 70), and early claiming reductions (5/9 of 1% per month for first 36 months, 5/12 of 1% per month thereafter). SSA.gov

This calculator uses compound growth math only. No IRS tax values, SSA benefit formulas, or regulatory thresholds are hardcoded — those are handled by the dedicated RMD, Roth conversion, and Social Security calculators. Withdrawal rate benchmarks reflect the Bengen/Trinity research framework. Reviewed June 2026.

RetirementIncomeAdvisorMatch is a referral service, not a licensed advisory firm. We may receive compensation from professionals in our network. Content is for informational purposes only and does not constitute financial, tax, or investment advice.