Retirement Income Gap Calculator
Will your money last? Compare your desired retirement income to what your savings and Social Security will actually provide.
Example: with Desired annual income in retirement $60,000 · Social Security + pension / year $24,000 · Current retirement savings $150,000 · Monthly contribution $1,000 → Income needed from savings: $36,000 / yr.
- Projected nest egg$1,117,703
- Savings will provide (4% rule)$44,708 / yr
- Nest egg target$900,000
Computed by the calculator below using its default values. Change any input to see your own numbers.
Retirement planning and rollover tools
Learn moreIncome, not just a number
Retirement planning is really about income: will your savings plus Social Security cover your spending? We work out how much must come from your portfolio, apply the 4% rule to your projected nest egg, and show whether there’s a gap to close.
How it’s calculated & sources
Income needed from savings = desired income − Social Security/pension. We project your nest egg (current savings plus contributions at your real return) and assume a 4% withdrawal rate. The target nest egg is the income gap ÷ 4%.
Benchmark: a common goal is replacing 70–80% of pre-retirement income; the 4% rule converts savings into sustainable income (Trinity study).
Results update as you type and are general estimates, not personalized financial, tax, medical or legal advice. Verify with a professional.
Frequently asked questions
Is the 4% rule still safe?
It’s a durable starting point; some research suggests ~3.5–4%. Lower the withdrawal rate for a longer retirement or more caution.
Should I use a real or nominal return?
Use a real (inflation-adjusted) return so the result is in today’s dollars and matches your spending goal.