Start with the spending you already know
Review recent bank or card summaries and recurring bills to estimate ordinary monthly costs. Group them into housing, utilities, food, transportation, insurance, debt payments, household needs, and personal spending. Consider which expenses may stop, continue, or change after work ends. A current month is only a starting point; compare several months if your spending varies.
Separate essential expenses from flexible goals such as travel or gifts. This does not decide which costs you should cut. It makes the trade-offs visible so you can choose a monthly income goal that reflects your household’s priorities.
Convert irregular costs to a monthly amount
Some costs arrive once or a few times a year. Estimate the expected annual amount and divide by 12. For instance, if a household expects $1,800 of annual home maintenance, that is $150 per month for budgeting purposes. This is a planning allocation, not a prediction that every year will cost exactly that much.
Also consider vehicle replacement or repairs, dental and vision costs, insurance premiums, family support, subscriptions, and emergency reserves. Avoid counting the same expense twice when combining budgets.
Health care deserves its own estimate
Health costs can include premiums, deductibles, copayments, prescriptions, dental or vision services, and care not covered by a plan. Costs and coverage vary by person, location, plan, and year. Medicare does not mean every health expense is paid in full. Review current coverage and official plan information instead of relying on a single broad average.
Start with Medicare’s current costs and coverage information if it applies to you. It describes premiums and other costs and notes that plan expenses vary. People who are not yet eligible for Medicare should estimate the coverage they expect to use before and after that transition.
Turn your budget into an income goal
Suppose your first draft totals $4,200 per month for recurring needs and planned spending, and you add $300 per month for irregular expenses. A possible income goal to test is $4,500. This is only an example of adding categories; it is not a recommended retirement budget. Include taxes consistently: if your spending target is after tax, decide whether to enter after-tax income estimates too.
Enter the resulting monthly goal in the calculator, then compare it with income figures in the same household, tax, and dollar basis. Use the calculator walkthrough and methodology for input definitions.
Related pages
Review the calculator methodology, compare hypothetical worked examples, or return to the free retirement income calculator.