Start with what you actually spend now

A retirement budget begins with knowing your real expenses, not what you think you spend. For the next month, write down or photograph every purchase — groceries, utilities, gas, prescriptions, haircuts, everything. Many people find they spend 20 to 30 percent more than they guessed, often on small repeated costs they never added up.

Once you have a month of actual numbers, sort them into categories: housing (rent or mortgage, property tax, insurance, maintenance), utilities, food, transportation, healthcare, insurance premiums, and discretionary spending (dining out, hobbies, travel). This sorting matters because some costs will change in retirement and others will not.

If a month feels unusual — you had a car repair or bought holiday gifts — track a second month. Two months of data is more reliable than one, especially if you are retired or close to it and can see the real pattern.

Key Takeaways

  • Track your actual spending for at least one full month in each category to see where your money goes, because most people underestimate by 20 to 30 percent.
  • Separate fixed costs (housing, insurance) from variable costs (food, utilities) because fixed costs are easier to predict in retirement.
  • Plan for healthcare costs to rise significantly after age 65, and account for Medicare premiums, deductibles, and costs Medicare does not cover.
  • Test your budget against your income sources — Social Security, pensions, withdrawals from savings — to see whether the numbers work month to month.
  • Build in a buffer for unexpected costs like home repairs or medical bills, because retirement is long and surprises happen.

Separate costs that will change from costs that will stay the same

Some expenses drop in retirement. If you no longer commute to work, gas and car maintenance fall. If your mortgage is paid off, that payment vanishes. If you stop working, you no longer pay Social Security and Medicare taxes on your wages. Add these up — they often total hundreds of dollars a month.

Other costs rise. Healthcare spending typically increases after age 65, even with Medicare. Home maintenance becomes more noticeable when you are home more often. Travel and hobbies may expand if you have time for them now. Property taxes and homeowner's insurance do not disappear. Prescription costs often climb as you age.

Go through your spending list and mark each item: will this go down, stay the same, or go up? For items that will change, estimate the new amount. If you are unsure, ask your doctor about typical costs for your conditions, call your insurance company about what Medicare will and will not cover, or talk to friends already retired about what they actually spend.

Account for healthcare costs before and after Medicare

Healthcare is the biggest budget surprise for people approaching retirement. If you retire before age 65, you need health insurance until Medicare starts. The cost varies widely depending on where you live and what coverage you choose, but it is rarely cheap. If you have employer coverage, ask whether you can keep it after you leave — some employers offer retiree health plans, though these are less common than they once were.

At age 65, Medicare begins, but it does not cover everything. You pay a monthly premium for Part B (doctor and outpatient care), and you have a deductible and copays. You also need to choose Part D (prescription drug coverage) or pay a penalty later. Many people buy a Medigap policy to cover costs Medicare does not, and that has its own premium. Dental, vision, and hearing aids are not covered by Original Medicare, though some Medicare Advantage plans include them.

Write down what you currently pay for health insurance, copays, and prescriptions. Then contact Medicare.gov or call 1-800-MEDICARE to learn what your costs would be under different plans. This is not guesswork — you can get actual numbers for your situation.

Match your spending to your income sources

Now you know what you spend. Next, list what you will have coming in: Social Security (you can see your estimated benefit at ssa.gov), a pension if you have one, withdrawals from retirement savings, rental income, or part-time work. Write down the monthly amount for each.

Subtract your total monthly spending from your total monthly income. If the number is positive, your budget works. If it is negative, you are spending more than you have, and you need to either reduce spending or find more income.

This calculation matters because it shows you whether you can actually retire when you plan to, or whether you need to work longer, spend less, or delay Social Security to get a larger monthly payment. It also shows you which months might be tight — if you have large annual costs like property taxes or car insurance, those months will be harder than others.

Build in a buffer for the unexpected

Retirement lasts 20, 30, or even 40 years. In that time, the roof will leak, the car will need work, a grandchild will graduate, or a health crisis will arrive. A budget that leaves no room for surprises will break the first time something goes wrong.

A common rule is to keep three to six months of expenses in a savings account you can reach quickly. For someone spending $3,000 a month, that means $9,000 to $18,000 set aside. This money is not for investing — it is for the month your furnace dies or you need an unexpected medical procedure. Once you use it, you rebuild it from your monthly surplus.

If you do not have this buffer yet, consider building it before you retire. It takes pressure off your other savings and lets you handle surprises without derailing your whole plan.

Review and adjust your budget every year

Your first retirement budget is a starting point, not a permanent rule. Inflation means your costs will rise — groceries cost more next year than this year. Your health may change, shifting what you spend on medical care. You may discover you actually enjoy travel more than you thought, or less. You may inherit money, or face an unexpected expense.

Once a year, usually around the time you file taxes or receive your Social Security statement, sit down with your budget again. Look at what you actually spent in the past year. Update your income numbers if anything changed. Adjust your spending estimates for the year ahead. This takes an hour or two and catches problems before they become serious.

If you find you are spending more than you planned, you have choices: reduce spending in some category, work a bit longer before retiring, delay Social Security to get a higher payment, or draw down savings more than you planned. The point of reviewing is to see the problem early, when you have options.

Tools and documents you will need

You do not need special software to build a retirement budget. A spreadsheet (Excel, Google Sheets, or even paper) works fine. Create columns for each spending category and rows for each month. Add up the columns to see your total spending and compare it to your income.

Gather these documents before you start: your last few months of bank and credit card statements (to see what you actually spent), your most recent pay stub (to see what taxes come out), your Social Security statement (from ssa.gov), any pension paperwork, and your health insurance documents. If you own a home, have your property tax bill and homeowner's insurance policy handy.

If you are married or have a partner, do this together. You may spend money differently, and you both need to understand the budget and agree on it. If one person handles finances and the other does not, this is a good time to change that — retirement is too long to leave one person managing all the money.

Frequently Asked Questions

What if I do not know how much Social Security I will get?

Visit ssa.gov and create a my Social Security account. You will see your estimated benefit at your current age, and also what it would be if you wait until 67, 70, or another age. The longer you wait, the larger the monthly payment. You can also call 1-800-772-1213 to speak with someone who can answer questions about your specific situation.

Should I include money I plan to leave to my children in my budget?

No. Your budget should cover your own living expenses for as long as you live. If you have money left over after that, it goes to your heirs. If you try to budget around leaving money behind, you risk running short yourself. Your priority is your own security.

How do I know if my budget is realistic?

Test it against your actual spending for a few months after you retire. If you are spending more than your budget predicted, adjust the budget upward or find places to cut. If you are spending less, you have more cushion than you thought. Real life always differs from the plan — that is normal.

What if my expenses are higher than my income?

You have several options: reduce spending in categories where you have flexibility (dining out, travel, hobbies), work part-time in retirement, delay retiring until you have saved more, or delay claiming Social Security to get a larger monthly payment. A financial advisor can help you model these choices, but the decision is yours.

Do I need to hire someone to help me with my retirement budget?

Many people build their own budget successfully. If your situation is straightforward — you have Social Security and maybe a small pension, own your home outright, and have modest savings — you can likely do this yourself. If you have multiple income sources, significant investments, or complex tax situations, talking to a financial advisor or tax professional may be worth the cost.