How Much Income Do You Really Need in Retirement?
The 80% rule is outdated. Our updated framework adjusts for healthcare, housing, and the new tax brackets.
Why the 80% rule is broken
The old rule of thumb — "you need 80% of your pre-retirement income" — assumed a mortgage paid off by 65, no kids at home, low healthcare costs, and a predictable pension. None of that is universally true anymore. Many retirees today carry a mortgage well past 65, support adult children, face $10,000–$20,000/year in out-of-pocket healthcare, and have no pension at all.
A better framework: three buckets
Calculate retirement spending in three buckets:
- Essentials — housing (mortgage or rent, property tax, insurance, maintenance), food, transportation, utilities, healthcare premiums, prescriptions.
- Lifestyle — travel, hobbies, dining out, gifts, subscriptions.
- Buffer — a long-term-care reserve, vehicle replacement fund, unexpected medical, home repairs.
Add them up. That's your real number.
A median example
A married couple in a typical Midwestern city, mortgage paid off:
| Category | Monthly | Annual |
|---|---|---|
| Property tax + insurance + maintenance | $850 | $10,200 |
| Utilities | $350 | $4,200 |
| Food (home + dining) | $900 | $10,800 |
| Transportation (1 car, mostly local) | $500 | $6,000 |
| Healthcare premiums + out-of-pocket | $1,200 | $14,400 |
| Travel (2 trips/year) | $500 | $6,000 |
| Hobbies, gifts, entertainment | $600 | $7,200 |
| Misc + buffer | $400 | $4,800 |
| Total | $5,300 | $63,600 |
Add Social Security (say $40,000 joint), and the gap is ~$24,000/year that has to come from investments. At a 4% withdrawal rate, that requires $600,000 in retirement assets.
What changes the number most
- Mortgage status. A retiree with a $2,000/month mortgage needs $24,000 more annually than one who is paid off.
- Healthcare before Medicare. Retiring at 62 with no employer health insurance can cost $15,000–$25,000/year per person for ACA coverage until age 65.
- Long-term care. The median assisted-living bill is $5,400/month; memory care is $7,000+/month. Most retirees underfund this.
- Travel. A snowbird couple renting a Florida condo December–March can easily spend $20,000+/year just on the seasonal move.
- Inflation. A 65-year-old today should plan to live 20–30 more years. Even modest 3% inflation doubles costs in 24 years.
The 4% rule, updated
The original 4% rule (Bengen, 1994) said you could safely withdraw 4% of your starting portfolio, inflation-adjusted, for 30 years. More recent research (Morningstar, Kitces) suggests 3.7–4.0% is still safe for a 30-year retirement with a balanced portfolio.
In practice: for every $1,000/month you want from your portfolio, you need roughly $300,000 saved.
The Social Security floor
Don't forget Social Security covers a meaningful chunk of essential expenses for most retirees:
- Average Social Security check: ~$1,950/month.
- Average couple: ~$3,800/month combined.
- That alone covers most essentials in lower cost-of-living areas.
Taxes in retirement
Don't budget gross — budget net. Withdrawals from traditional IRAs are taxed as ordinary income. Up to 85% of Social Security can be taxable. Roth withdrawals are tax-free. A typical retiree with $40k of Social Security and $40k of IRA withdrawals pays roughly 5–10% effective federal tax, plus state.
Bottom line
Add up your planned monthly expenses, multiply by 12, then add a healthcare buffer and a long-term-care reserve. Most retirees need $60k–$120k/year household, of which Social Security covers $30k–$50k. The rest has to come from investments — which is why $500k–$1.5M in retirement assets is the realistic range for most middle-class households.