Retirement budget planning is the process of matching your expected spending in retirement to reliable income sources so your savings last as long as you do. It is less about cutting coupons and more about forecasting: estimating what life will cost, deciding which accounts to draw from and when, and building in room for health care and inflation. Done well, a retirement budget turns a vague worry into a set of numbers you can track and adjust each year.
Start With Your Current Spending, Then Adjust
The most reliable starting point is what you spend now. Pull 12 months of bank and credit card statements and group expenses into categories: housing, utilities, food, transportation, insurance, health care, debt payments, and discretionary spending. Many households find they spend 70% to 80% of their pre-retirement income in retirement, though the range varies widely. The Employee Benefit Research Institute has repeatedly found that spending often declines slowly in early retirement and then rises again later as health care costs grow.
Adjust your working-year budget for changes that retirement brings:
- Subtract commuting costs, payroll taxes, work clothes, and retirement contributions.
- Add Medicare premiums (Part B and Part D), supplemental Medigap or Medicare Advantage costs, and out-of-pocket medical expenses.
- Add spending on travel, hobbies, and gifts if you plan to be more active early on.
- Keep a line item for home maintenance and eventual large replacements such as a roof or vehicle.
Map Your Income Sources and Their Timing
A budget only works if income arrives when bills do. Most retirees draw from several sources, each with different rules:
- Social Security. You can claim as early as 62, at your full retirement age (66 to 67 for most people retiring now), or as late as 70. Claiming at 62 permanently reduces your benefit by up to 30%, while delaying past full retirement age increases it by 8% per year up to age 70.
- Traditional 401(k) and IRA withdrawals. These are taxed as ordinary income. Required minimum distributions generally begin at age 73 under current law for those born 1951 to 1959, and at 73 for those born 1960 or later.
- Roth IRA withdrawals. Qualified withdrawals are tax-free and do not count toward required minimum distributions, which gives you flexibility to manage taxable income year by year.
- Pensions and annuities. Fixed income that can cover essential expenses and reduce the pressure to sell investments in a down market.
- Taxable brokerage accounts. Withdrawals may be taxed at capital gains rates, which are often lower than ordinary income rates.
A common strategy is to cover essential expenses—housing, food, utilities, insurance—with predictable income such as Social Security and any pension, then fund discretionary spending from investments.
Use the 4% Rule as a Starting Point, Not a Rule
The widely cited 4% rule suggests withdrawing about 4% of your portfolio in the first year of retirement and adjusting that dollar amount for inflation each year. It comes from historical return data and is a useful sanity check: a $1 million portfolio implies roughly $40,000 of first-year withdrawals. But it assumes a 30-year horizon and a specific stock-and-bond mix, and it does not fit every household. Many planners now recommend a dynamic approach: start with a modest withdrawal rate, monitor portfolio performance, and trim spending after bad market years rather than following a fixed formula blindly.
Plan for Health Care and Inflation
Health care is the expense most likely to derail a retirement budget. Fidelity Investments' annual estimate of health care costs for a 65-year-old couple retiring in 2024 was about $315,000, covering premiums and out-of-pocket costs but not long-term care. Budget for Medicare premiums, dental and vision costs that Medicare does not fully cover, and a reserve for long-term care, which Medicare generally does not pay for.
Inflation matters just as much. Even moderate inflation erodes purchasing power over a 25- or 30-year retirement. Build cost-of-living increases into your projections, and remember that Social Security benefits receive annual cost-of-living adjustments while many pensions do not.
Stress-Test and Review Your Plan Annually
Run your numbers against a few scenarios: a market decline in your first two years of retirement, higher-than-expected medical costs, and living to age 95. Then revisit the budget once a year. Compare actual spending to your plan, adjust withdrawals, and coordinate with tax planning—for example, using lower-income years before required minimum distributions begin to convert some traditional IRA money to a Roth. A written budget you review each year is far more useful than a one-time calculation.
What to Remember
Retirement budget planning works best as a cycle: estimate expenses from real spending, match them to income sources with the right timing, keep a cushion for health care and inflation, and review the plan annually. The goal is not a perfect forecast but a spending plan flexible enough to survive the surprises that a long retirement will bring.
