I sat down last weekend with a spreadsheet and a cup of coffee. Two hours later, I wasn't drinking coffee anymore — I was stress-googling "how to catch up on retirement savings."
Here's the thing nobody tells you: retirement math is simple, but the number it spits out can be terrifying.
Financial advisor William Bengen figured out that if you withdraw 4% of your portfolio in year one, then adjust for inflation each year, you probably won't run out of money over 30 years. Probably. It's based on historical data, not a guarantee.
The math: Required Savings = Annual Expenses ÷ 0.04
| Annual Expenses | You Need Saved |
|---|---|
| $40,000 | $1,000,000 |
| $60,000 | $1,500,000 |
| $80,000 | $2,000,000 |
| $100,000 | $2,500,000 |
Some planners now say 3.5% or even 3% is safer, especially if you retire early or hit a market crash in your first few years. I use 4% as a starting point, then pad it.
Social Security replaces about 35-40% of pre-retirement income for average earners. The max monthly benefit at full retirement age (67) is roughly $4,873, but the average is closer to $1,900.
Here's what that means in practice:
| Scenario | Expenses | Social Security | You Still Need | Savings Target |
|---|---|---|---|---|
| Single, average | $60,000 | $22,800 | $37,200 | $930,000 |
| Married, both average | $80,000 | $45,600 | $34,400 | $860,000 |
| Single, high earner | $100,000 | $35,000 | $65,000 | $1,625,000 |
But here's the catch: Social Security's trust fund is projected to run dry around 2033. After that, benefits could drop 20-25% unless Congress fixes it. I calculate my needs both with and without Social Security, just to see the range.
Your spending in retirement isn't just your current spending minus work costs. Some things get cheaper. Others get way more expensive.
Cheaper: No more commute ($200-500/month), no work clothes, no payroll taxes.
Way more expensive:
Let's say you're 35, want to retire at 65, and need $1.5 million. At 7% annual return:
| Current Savings | Monthly Savings | Total You Put In | Interest Does the Rest |
|---|---|---|---|
| $0 | $1,050 | $378,000 | $1,122,000 |
| $50,000 | $870 | $313,200 | $1,136,800 |
| $100,000 | $690 | $248,400 | $1,151,600 |
| $200,000 | $330 | $118,800 | $1,181,200 |
Starting at 25 instead of 35? That $1,050 drops to $420. Waiting until 45? It jumps to $2,850. Time is either your best friend or your worst enemy.
The median retirement savings for Americans in their 50s is under $100,000. If that makes you feel better, it shouldn't — but at least you're not alone.
Here's how to catch up:
Don't use my numbers. Plug in your age, savings, and goals to see if you're on track.
Use the Retirement Calculator →Depends on your expenses. At 4%, $1 million generates $40,000/year. Add $25,000 from Social Security and you're at $65,000. Fine for many people in lower-cost areas with a paid-off house. Tight in San Francisco or New York.
It's part of your net worth but not your liquid retirement income — you can't easily spend it without selling or a reverse mortgage. Some planners count it as a backup reserve. If you plan to downsize, factor in expected proceeds.
That's "sequence of returns risk" — one of the biggest threats. If a crash hits in your first 5 years, your portfolio may never recover. Mitigation: keep 2-3 years of expenses in cash/bonds, reduce withdrawals during downturns, or buy a single-premium immediate annuity for guaranteed income.