Estimate your monthly expenses in retirement
Enter your current monthly expenses across categories (housing, food, healthcare, etc.) and adjust for expected changes in retirement. Click Calculate to see your estimated retirement monthly expenses and annual need.
Key Output — This is the primary number the calculator returns. It represents the answer to the question you asked, calculated using standard financial formulas.
Breakdown Details — These supporting numbers show you how the result was reached. They help you understand what's driving the outcome and where you might adjust your inputs.
What to Look For — Pay attention to how small changes in inputs affect the outputs. The relationship between your inputs and results is where the real insight lives — that's what helps you make better decisions.
Every calculation uses standard financial math — the same formulas banks, lenders, and investment platforms use. The inputs you provide determine the accuracy of the result.
Margaret is a retired teacher who will receive $1,800 per month from Social Security and has $210,000 in a 401(k). She owns her home but expects $400 in monthly property taxes and $250 for homeowners insurance. She wants to see if she can cover her basic living expenses of $3,200 per month without running out of money by age 90.
"I thought my savings would just keep paying out, but seeing that shortfall at age 87 was a shock. I need to either cut $100 from my budget or keep working part-time for two more years."
Takeaway: Your withdrawal amount matters more than your total balance — reducing spending by 5% can add years to your retirement savings.
David and Elena plan to retire at 62 with a combined $480,000 in 401(k)s and expect $2,600 from Social Security. They assume $3,800 in monthly living costs but haven't factored in health insurance premiums before Medicare eligibility at 65. They use the calculator to compare retiring at 62 vs. 64.
"We thought 'two more years' would be a small difference. But the calculator showed that those extra premium years and lower Social Security actually force us to cut $350 from fun spending. That feels real."
Takeaway: Pre-Medicare health insurance costs are often the single largest unplanned expense in early retirement — modeling them changes timelines dramatically.
Frank has $620,000 in savings, a small pension of $900/month, and expects $2,100 from Social Security. He lives frugally on $4,100 per month. He assumes 2.5% inflation and a 6% return. But his real variable is home maintenance: his 45-year-old house needs a new roof ($12,000) and HVAC ($8,500) within five years.
"I was focused on the roof and AC. But the calculator showed me that even modest inflation eats $500 of buying power by year 10. That's scarier than any repair bill."
Takeaway: Inflation assumptions change results more than almost any other input — test your plan at 3% and 4% to see the real range of outcomes.
See how different inputs affect the result:
| Scenario | Key Input | Result A | Result B |
|---|---|---|---|
| Margaret | Monthly withdrawal ($1,400 vs. $1,200) | Funds deplete at age 87 | Funds last to age 92 |
| David & Elena | Retirement age (62 vs. 64) | $4,300 deficit at 68 | $1,100 deficit at 68 |
| Frank | Inflation assumption (2% vs. 4%) | Portfolio lasts to 92 | Portfolio fails at 80 |
| All scenarios | Annual return (5% vs. 7%) | Avg. +2.3 years of funds | Avg. +6.1 years of funds |
Across all scenarios, reducing monthly withdrawals by just 10% added 3–5 years of portfolio life — more than any other single change except inflation.
Disclaimer: All calculations and scenarios are hypothetical and for illustrative purposes only. They assume constant conditions — real-world results may vary. These calculators are educational tools, not financial advice. Consult a qualified professional before making financial decisions.