Estimate spending in today’s dollars
Start with housing, food, transport, healthcare, insurance, taxes and discretionary spending. Some work expenses may disappear while other costs rise. Distinguish recurring spending from major one-off purchases. Keeping the first estimate in today’s dollars makes it easier to compare with your present budget.
Map income and its start dates
List income you expect from pensions, public benefits or other sources, checking the relevant official statements and eligibility rules. An income stream that starts years after retirement will not cover the earlier gap. Do not assume uncertain rental or business income arrives evenly.
Use a target as a scenario
Dividing an annual spending gap by an assumed initial withdrawal rate gives a rough invested-asset target. For example, a $36,000 gap divided by 4% gives $900,000. That arithmetic does not establish that a particular withdrawal strategy will survive your retirement or that 4% is appropriate for you.
Stress-test the years that matter
Consider longevity, market losses near retirement, inflation, healthcare and tax. Separate your home’s value from invested assets available to fund spending. Our target calculator is an entry point; a detailed plan needs account-specific cash flows, dates and, when appropriate, a qualified professional.
Put the idea into numbers
Further reading
SEC: Asset allocation and diversification
General education with a U.S. context. Illustrations are hypothetical. Account, tax and legal rules depend on your circumstances and location.