Building a Retirement Budget When Social Security Is Your Main Income

What Social Security actually covers, and what it doesn't

Social Security replaces roughly 40 percent of what the average worker earned before retirement — not all of it. That means if you earned $50,000 a year, your monthly benefit might replace $20,000 of that annual income. The actual amount depends on how much you paid into the system over your working life and what age you claim the benefit.

The first step in budgeting around Social Security is knowing your own number. You can create a my Social Security account at ssa.gov to see your estimated benefit amount before you claim. The Social Security Administration sends this estimate to you at age 60 if you don't create an account online. Once you have that number, you can see what gap remains between that income and what you actually spend.

Many people find that gap is real and substantial. Social Security alone rarely covers housing, food, utilities, healthcare, and everything else. That is why the next sections walk through where the rest of the money comes from, and how to structure what you have.

Key Takeaways

• Your Social Security benefit amount depends on your earnings history and the age you claim, and you can see your estimate through a my Social Security account before you decide when to claim.
• Most retirees on Social Security alone need income from savings, pensions, part-time work, or other sources to cover all their expenses.
• Delaying your claim from age 62 to age 70 increases your monthly benefit by roughly 75 percent, which changes how much you need from other sources.
• A written budget that lists every monthly expense and every income source shows you whether you have a shortfall and where to cut or find more money.
• Healthcare costs in retirement are separate from Social Security and require their own planning, especially before Medicare begins at 65.

Deciding when to claim: how timing changes your monthly check

You can claim Social Security as early as age 62, but your monthly benefit will be permanently smaller than if you wait. If you wait until your full retirement age (which ranges from 66 to 67 depending on your birth year), you get the full amount the system calculated for you. If you wait until 70, your benefit grows by about 8 percent for each year you delay past full retirement age.

The math matters for your budget. Someone born in 1960 with a full retirement age of 67 might receive $2,000 a month at 67, but only $1,400 at 62 or $2,480 at 70. That $1,080 monthly difference between claiming at 62 and 70 is $12,960 a year — a real amount to account for in your budget. If you claim early, you need to find that money elsewhere. If you delay, you can live on less from savings or other sources while you wait.

The decision depends on your health, your savings, and whether you have other income. There is no single right answer, but there is a right answer for your situation. A financial planner or your local Area Agency on Aging can help you model different claim ages against your actual expenses and resources.

Listing what you actually spend each month

Before you can build a budget around Social Security, you need to know what you spend. This is not an estimate — it is the real number from your bank and credit card statements over the last three months. Write down every category: housing (rent or mortgage, property tax, insurance, maintenance), utilities, food, transportation, healthcare, insurance premiums, subscriptions, and anything else that leaves your account.

Many people find they spend more than they thought, or they spend differently in different months. Winter heating costs more than summer. Car repairs are unpredictable. Gifts and holidays cluster in certain months. A three-month average gives you a more honest picture than guessing.

Once you have that total monthly spend, subtract your Social Security benefit. The number left over is what you need from savings, pensions, part-time work, or other sources each month. If that number is negative — meaning Social Security covers everything — you are in a strong position and can focus on making your savings last. If it is positive, you have a shortfall to solve.

Finding the money for the gap: savings, pensions, and work

Most people cover the gap between Social Security and their expenses through a combination of sources. The most common are savings or investments (including IRAs and 401(k)s), a pension from a former employer, part-time or seasonal work, rental income, or help from family.

If you have savings, the question is how fast you can spend them without running out. A rough rule is the 4 percent rule: withdraw 4 percent of your savings in the first year of retirement, then adjust that amount for inflation each year after. So $100,000 in savings would generate roughly $4,000 in the first year, or $333 a month. That is not much, but combined with Social Security it adds up. A financial planner can help you calculate a sustainable withdrawal rate based on your age, life expectancy, and how much you have saved.

If you have a pension, that income is usually fixed and predictable — you know the amount before you retire. Add it to your Social Security, and you have a clearer picture of what you are working with. If you do not have a pension or savings, part-time work, even a few hours a week, can close a small gap. Many people in early retirement work seasonally or take on flexible jobs specifically to reduce pressure on savings.

Healthcare costs before and after Medicare

Social Security does not cover healthcare. If you retire before 65, you need to find health insurance on your own — usually through the Affordable Care Act marketplace in your state. If your income is low, you may may have access to for subsidies that reduce your premium. You can explore options at healthcare.gov.

At 65, you become may be able to access for Medicare. You must sign up during your initial enrollment period (the three months before, the month of, and the three months after your 65th birthday) or pay a penalty for late enrollment. Medicare has different parts: Part A covers hospital care, Part B covers doctor visits, Part D covers prescriptions, and supplemental plans (Medigap) or Medicare Advantage plans cover gaps in original Medicare.

These premiums come out of your Social Security check or your bank account — they are not covered by Social Security itself. Part B premiums in 2024 range from about $175 to $560 a month depending on your income. Part D premiums vary by plan. Budget for these separately from your basic living expenses, because they are mandatory and they change year to year.

Adjusting your budget when expenses change

Your first retirement budget is not your final one. Expenses shift: a car breaks down, a grandchild needs help, your rent increases, or your health changes and you need more medical care. Social Security increases each year by a cost-of-living adjustment (COLA), but that increase is usually smaller than inflation in healthcare or housing.

Review your budget once a year, ideally in the fall before the new year starts. Compare what you actually spent to what you budgeted. If you are spending more than you planned, identify where — is it a one-time expense or a new regular cost? If you are spending less, you may be able to increase savings or reduce pressure on other income sources.

If you find you have a persistent shortfall, your options are to reduce spending, increase income (through part-time work or drawing more from savings if you have it), or both. A social worker or financial counselor at your local Area Agency on Aging can help you think through these choices without judgment.

Tools and records you need to keep

You do not need fancy software. A spreadsheet or even a notebook works if it shows your monthly income (Social Security, pension, work, savings withdrawal, anything else) and your monthly expenses by category. The point is to see the whole picture at once and update it when things change.

Keep your Social Security statements and any pension or investment statements in one place — digital or paper, whatever you will actually use. You need these to file taxes each year and to catch errors. If your Social Security benefit seems wrong, you can contact the Social Security Administration at 1-800-772-1213 to ask questions.

If you have a pension, keep the contact information for your pension administrator. If you draw from an IRA or 401(k), keep records of how much you withdraw each year for tax purposes. Your tax situation changes in retirement, and you may owe taxes on Social Security benefits if your total income is high enough. A tax professional or the AARP Tax-Aide program (free tax help for people over 60) can walk you through this once a year.

Frequently Asked Questions

Can I change my mind after I claim Social Security?

You can withdraw your claim within 12 months of claiming and repay what you received, which restarts your benefit at a higher amount. After 12 months, you cannot undo the claim, but you can suspend your benefit at full retirement age or later, which allows it to grow until you restart it. The rules are complex, so ask the Social Security Administration before you make a change.

What if I am still working and claiming Social Security?

If you claim before full retirement age and earn more than $23,400 in 2024 (the limit changes yearly), Social Security reduces your benefit by $1 for every $2 you earn over that amount. Once you reach full retirement age, there is no earnings limit. This affects your monthly budget, so factor in the reduction if you plan to work and claim early.

How do I know if my Social Security benefit is correct?

Create a my Social Security account at ssa.gov to see your earnings record and estimated benefit. Review the earnings history to make sure it matches your actual income — errors can happen, and you can request a correction. If you spot a mistake, contact Social Security right away, because there are time limits on corrections.

What happens to my Social Security if I move to another country?

You can receive Social Security while living in most countries, but not all. The rules depend on your citizenship and the country. Contact the Social Security Administration before you move to confirm your benefit will continue and whether you need to report your new address.

Should I claim Social Security or keep working?

That depends on your health, your job, your savings, and your family history. If you are healthy and have savings, delaying your claim increases your monthly benefit significantly. If you are not healthy or you need the money now, claiming early makes sense even though your monthly amount is smaller. A financial planner can model both scenarios against your actual situation.