Retirement Income Calculator — Will Your Savings Last? (2026)

Retirement income is not a single number — it is a system built on three distinct pillars, each with different risk profiles, tax treatments, and levels of control. Understanding how these pillars interact is essential to building a retirement income plan that survives market crashes, inflation, and the unexpected expenses that inevitably arise over a 20-30 year retirement.

**Pillar 1: Investment withdrawals.** This is the income you generate by drawing down your retirement savings — 401k, traditional IRA, Roth IRA, and taxable brokerage accounts. The amount depends on two factors: how much you have saved and the withdrawal rate you choose. At a 4% withdrawal rate, every $100,000 in savings produces $333 per month. The advantage of this pillar is control — you decide how much to withdraw and when. The risk is market dependence: if your portfolio drops 30% in a bear market, your income capacity drops with it unless you have a cash buffer to avoid selling at a loss.

**Pillar 2: Social Security.** For most retirees, Social Security is the foundation — a guaranteed, inflation-adjusted income stream that continues for life. The average benefit in 2026 is approximately $1,907 per month, but your actual benefit depends on your 35 highest-earning years and the age you claim. Claiming at 62 permanently reduces your benefit by up to 30% compared to waiting until 70. Social Security replaces roughly 40% of pre-retirement income for average earners and a lower percentage for high earners. It is the only retirement income source that automatically adjusts for inflation through annual cost-of-living adjustments (COLAs).

**Pillar 3: Other income.** This encompasses pensions (increasingly rare but still available in government and some unionized sectors), rental property income, part-time work, annuity payments, and royalties or business income. The key advantage of this pillar is diversification — rental income does not correlate with stock market performance, and pension income is guaranteed regardless of market conditions. Retirees who can cover 40-60% of their expenses through Social Security and other income sources put far less pressure on their investment portfolio, allowing it to survive longer even in poor market conditions.

**How the pillars work together.** The ideal retirement income plan minimizes reliance on any single pillar. Consider two retirees with the same $5,000 monthly need: Retiree A has $4,000 from investment withdrawals and $1,000 from Social Security. Retiree B has $1,500 from investments, $2,500 from Social Security, and $1,000 from a pension. A 30% market crash devastates Retiree A's income plan but barely affects Retiree B's. Diversification across income sources is just as important in retirement as diversification across investments during your accumulation years.

The withdrawal rate you choose is arguably the most important retirement decision you will make after your savings rate. It determines your monthly income, your portfolio's longevity, and your financial flexibility for the next 20-40 years. There is no universally correct rate — the right choice depends on your age at retirement, other income sources, health, risk tolerance, and legacy goals.

**The 4% rule explained.** The 4% rule was established by financial planner William Bengen in 1994 and validated by the 1998 Trinity Study conducted at Trinity University. Researchers tested every rolling 30-year period from 1926-1995 and found that a retiree withdrawing 4% of their portfolio in year one — then adjusting that dollar amount for inflation each subsequent year — had a 95% chance of not running out of money over 30 years, assuming a diversified 50/50 stock-bond allocation. The 5% failure rate occurred during periods that included the Great Depression and the stagflation of the 1970s.

**Why some planners now recommend 3-3.5%.** The original Trinity Study relied on historical returns that included periods of higher bond yields (6-8%) than today's environment (4-5%). Some researchers, including Wade Pfau at the American College of Financial Services, argue that lower expected future returns mean a safe withdrawal rate of 3-3.5% is more appropriate for today's retirees. This is especially relevant for early retirees who need their portfolio to last 40-50 years rather than 30.

**When 5% might be acceptable.** A 5% withdrawal rate can work if you have significant guaranteed income (Social Security plus pension covering 60%+ of expenses), if you are retiring later (age 70+) with a shorter expected drawdown period, or if you are willing to reduce withdrawals during market downturns. The risk is real: historical analysis shows a 5% withdrawal rate failed in roughly 15-20% of 30-year periods, meaning your portfolio was depleted before the end of retirement.

**Dynamic withdrawal strategies.** Many financial planners now recommend flexible approaches rather than a fixed rate. The guardrails method sets upper and lower withdrawal limits — for example, increasing withdrawals by 10% after a strong market year and decreasing by 10% after a poor year. The bucket strategy segments your portfolio into three time horizons: 1-2 years of expenses in cash, 3-7 years in bonds, and the remainder in stocks. You draw from the cash bucket and refill it from bonds and stocks during favorable markets. These approaches can increase safe withdrawal rates to 4.5-5% while maintaining portfolio longevity.

**The impact of fees.** Investment fees directly reduce your effective return and thus your sustainable withdrawal rate. A portfolio with 1% annual fees earning a gross 6% return nets only 5%. Over 30 years, that 1% fee on a $500,000 portfolio costs over $300,000 in lost growth. Low-cost index funds (0.03-0.10% expense ratios) preserve more of your returns for income. If you are paying a financial advisor 1% annually, ensure the tax planning, Social Security optimization, and behavioral coaching they provide justify the fee.

Estimating gross retirement income is only half the equation. Federal and state taxes, healthcare costs, and inflation all erode your purchasing power over time. A retiree with $5,000 in gross monthly income may net only $3,800-$4,200 depending on their tax situation, and inflation at 3% reduces that purchasing power by half over 24 years. Proactive planning in these areas can add thousands of dollars per year to your effective retirement income.

**Federal tax on retirement income.** Traditional 401k and IRA withdrawals are taxed as ordinary income at your marginal federal tax rate. In 2026, a single retiree withdrawing $50,000 from a traditional IRA pays approximately $5,500 in federal income tax (effective rate of about 11%). Roth IRA withdrawals, by contrast, are completely tax-free — you paid taxes on contributions upfront. A strategic mix of traditional and Roth withdrawals can keep you in a lower tax bracket. For example, withdrawing $30,000 from a traditional IRA and $20,000 from a Roth IRA produces $50,000 in income but only $30,000 is taxable — saving roughly $2,200 in federal tax compared to withdrawing the full $50,000 from a traditional account.

**State tax varies dramatically.** Nine states charge zero income tax on retirement distributions: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Several others exempt specific retirement income — Illinois exempts all retirement plan distributions, Mississippi exempts all qualified retirement income, and Pennsylvania exempts most retirement income for residents over 59.5. High-tax states like California (up to 13.3%), New York (up to 10.9%), and Oregon (up to 9.9%) can claim $3,000-$8,000 annually on a $60,000 withdrawal. For retirees with location flexibility, state tax planning is one of the highest-impact decisions available.

**Healthcare: the biggest wildcard.** Healthcare is typically the largest and most unpredictable retirement expense. Before Medicare eligibility at 65, COBRA or marketplace insurance can cost $600-$1,500 per month. After 65, Medicare Part B premiums start at $185 per month (2026), but higher-income retirees pay IRMAA surcharges up to $578 per month. Medicare does not cover dental, vision, hearing, or long-term care — supplemental insurance (Medigap) costs $150-$350 per month. Fidelity estimates that a 65-year-old couple retiring in 2026 will need approximately $330,000 for healthcare expenses throughout retirement, not including long-term care.

**Inflation protection.** A 3% annual inflation rate means that $4,000 in today's purchasing power becomes equivalent to $2,000 in 24 years. Social Security provides built-in inflation protection through annual COLA adjustments. Investment withdrawals do not — unless your portfolio grows faster than your withdrawal rate plus inflation. This is why the expected return rate matters even for current income: if you withdraw 4% and inflation is 3%, your portfolio needs to earn at least 7% just to maintain purchasing power. A conservative 4% return with a 4% withdrawal and 3% inflation means your portfolio is depleting at roughly 3% per year in real terms.

**Required Minimum Distributions (RMDs).** Starting at age 73 (under current law), the IRS requires you to withdraw a minimum amount from traditional IRAs and 401ks each year, whether you need the income or not. RMDs are calculated based on your account balance and life expectancy factor — at age 73, the factor is roughly 3.8%, increasing each year. By age 80, it is roughly 5.3%. These forced withdrawals can push you into a higher tax bracket and increase Medicare IRMAA surcharges. Roth IRAs have no RMDs during the owner's lifetime, making them a powerful tool for tax-efficient retirement income planning. Consider Roth conversions in lower-income years before 73 to reduce future RMD obligations.