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Planning Basics 8 min read

How Much Do I Actually Need to Retire? A Real Framework

The honest answer to 'how much do I need to retire?' isn't a number. It's a process. Here's one approach.

D

David Whitlock

Contributor, Retirement Straight Talk

"How much do I need to retire?" is the most common question on the internet — and almost always the wrong question. The right question is: how much do I need on top of what's already coming in?

Step 1: Real expenses, not vague guesses

Pull three months of actual spending. Multiply by four. Adjust for what changes in retirement (no commuting, maybe more travel, different healthcare). You now have an annual retirement spending number.

Step 2: Subtract guaranteed income

  • Social Security (use your statement, both spouses)
  • Pensions, including survivor options
  • Annuities, rental income, part-time work

What's left is your portfolio gap — what your investments need to cover.

Step 3: Apply a sustainable rate

For most retirees, a sustainable withdrawal rate sits between 3.5% and 5%, depending on age, allocation, and flexibility. Divide your portfolio gap by that rate.

Example

  • Spending: $90,000/year
  • Social Security (both spouses): $48,000/year
  • Portfolio gap: $42,000
  • At 4.5%: needed portfolio ≈ $933,000

Not $2 million. Not $5 million. Less than $1 million — because the income side of the ledger was doing most of the heavy lifting.

Step 4: Stress-test it

Run scenarios: a 30% market drop in year one, healthcare doubling, a surviving spouse losing the smaller Social Security check. If the numbers still work, you're closer than you might think.

The number isn't a finish line — it's a planning tool. The real goal is a portfolio that funds the life you actually want.
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