Retirement Budget Calculator: What You'll Actually Spend

Here's the frustrating irony buried inside almost every retirement budget calculator: it asks you to enter your expected monthly expenses in retirement. Simple enough, right? Except that if you already knew what you'd spend, you probably wouldn't need the calculator in the first place.

The reality is that most people approaching retirement are working with a pretty fuzzy mental picture. They know roughly what they earn today, but retirement looks so different from working life that mapping one onto the other rarely works. Will you travel more? Will the mortgage be paid off? What will healthcare actually cost once you leave your employer's plan? These aren't trivial questions, and vague answers lead to retirement budgets that are either dangerously optimistic or needlessly scary.

This guide is designed to fix that. We'll walk through every major spending category, bring in real data on what retirees actually spend, and help you build a monthly retirement budget that reflects your real life, not a textbook assumption. And we'll start by taking apart one of personal finance's most durable myths.

You've probably heard this one before: plan to spend about 80% of your pre-retirement income once you stop working. It's been repeated so often it's taken on the feel of official guidance. It isn't.

The 80% rule is a rule of thumb, and like most rules of thumb, it works well enough in the middle of a large population but can be quite wrong for any individual person. Here's why it falls apart in practice.

Some retirees spend more, not less. If you retire at 62 in good health with a clear travel bucket list, your early retirement years may cost more than your working years once you factor out commuting costs and payroll taxes, but add in flights, cruises, and new hobbies. Research published by the Employee Benefit Research Institute has documented a pattern where many retirees actually increase discretionary spending in the early years of retirement before pulling back later.

Your income today isn't the right baseline anyway. If you're a high earner who saves aggressively, you may already be living on 60% of your gross income. Why would you suddenly need 80% of a number that was never your actual lifestyle cost? Conversely, if you're carrying significant debt into retirement, your spending needs might be higher relative to your savings than the rule implies.

The rule ignores your specific situation entirely. It doesn't account for whether you own your home outright, whether you're supporting adult children or aging parents, whether you have a pension, or whether you have significant healthcare needs. It's a population average wearing the costume of personal advice.

A far more useful approach is to build your budget from the ground up, category by category. It takes more effort up front, but it gives you numbers you can actually trust.

Think of this as building a retirement expenses calculator from scratch using categories rather than percentages. Grab a spreadsheet, a legal pad, or whatever works for you, and work through each section below. Assign a monthly estimate to each one, even if it's a rough guess for now. You can refine the numbers as you get closer to your retirement date.

The goal at this stage is simply to get everything on paper and out of your head. Most people are surprised to discover categories they'd completely forgotten about once they start writing them down.

Your core budget categories:

• Housing (mortgage or rent, property taxes, HOA fees, maintenance and repairs)
• Healthcare (premiums, out-of-pocket costs, dental, vision, long-term care)
• Food (groceries, dining out)
• Transportation (car payments, insurance, fuel, maintenance, registration)
• Travel and leisure (vacations, hobbies, memberships)
• Utilities (electricity, gas, water, internet, phone, streaming)
• Insurance (life, home, auto, umbrella)
• Clothing and personal care
• Gifts and charitable giving
• Family support (helping kids, grandchildren, or aging parents)
• Taxes (this one often shocks people, which we'll cover shortly)
• Miscellaneous and emergency buffer

Notice that this list doesn't just cover needs. It includes the things that make retirement worth having. Underfunding leisure and travel is one of the most common budgeting mistakes, especially among people who plan frugally but then discover they're bored.

Here it is: the category that derails more retirement budgets than any other. Healthcare costs in retirement are genuinely significant, and they're worth treating as their own planning challenge rather than just another line item.

According to Fidelity's annual Retiree Health Care Cost Estimate, a single 65-year-old retiree may need a substantial amount saved specifically for healthcare costs in retirement, separate from other expenses. The exact figure varies by year and individual circumstances, but the consistent message from this research is that healthcare is expensive and the costs are unpredictable.

A few things that make healthcare budgeting especially tricky:

The gap before Medicare. Medicare begins at 65. If you retire at 62 or 63, you need a plan for those early years. Options may include COBRA coverage from your former employer, marketplace plans through Healthcare.gov, a spouse's employer plan, or other alternatives. Coverage in that gap period can be costly, particularly if you're not yet eligible for subsidies. Our guide on healthcare before 65 covers this gap in detail.

Medicare isn't free. Many people are surprised to learn that Medicare comes with premiums, deductibles, and copays. In 2026, the standard Medicare Part B premium is $185 per month per person. Higher-income retirees pay more through what's called IRMAA (Income-Related Monthly Adjustment Amount). You'll also want to factor in a Part D drug plan and potentially a Medigap or Medicare Advantage supplement.

Dental and vision aren't covered by Original Medicare. These costs come entirely out of pocket unless you purchase additional coverage, and they add up meaningfully over time.

Long-term care is in its own category. The potential cost of assisted living or nursing home care represents one of the largest financial risks in retirement. This is a separate planning conversation from your day-to-day healthcare budget, and a qualified financial adviser can help you think through options including long-term care insurance.

If you have a Health Savings Account (HSA) from your working years, it can play a valuable role here. HSA funds can cover qualified medical expenses in retirement tax-free, which is a meaningful advantage worth understanding.

This is the category that catches a surprising number of retirees off guard. The assumption that taxes largely disappear in retirement is a costly misconception.

Here's what many retirees pay taxes on:

• Traditional 401(k) and IRA withdrawals are taxed as ordinary income. Every dollar you pull from a pre-tax account gets added to your taxable income for that year.
• Social Security benefits may be partially taxable depending on your total income. According to the Social Security Administration, up to 85% of your Social Security benefit can be subject to federal income tax if your combined income exceeds certain thresholds.
• Required Minimum Distributions (RMDs) starting at age 73 can push retirees into higher tax brackets, especially if they've spent years deferring withdrawals while their accounts have grown. The IRS sets the rules on RMD calculations.
• Investment income from taxable brokerage accounts may be subject to capital gains taxes, though many retirees qualify for the 0% long-term capital gains rate depending on their income level.
• State income taxes vary widely. Some states don't tax retirement income at all; others treat it like any other income.

Understanding how taxes work across different account types in retirement is genuinely important, and it's one of the best arguments for having a diverse mix of pre-tax, Roth, and taxable accounts heading into retirement. The tax brackets in retirement can look quite different from your working years, which is worth understanding before you start taking withdrawals.

One of the most useful insights about retirement spending is that it isn't a flat line. Research by financial planner Michael Stein described what's sometimes called the three phases of retirement spending, often referred to as the "go-go, slow-go, and no-go" years. While this is a simplified framework rather than a rigid rule, it reflects a pattern many retirees recognise in their own lives.

In the early, active years of retirement, many people spend more on travel, dining, entertainment, and pursuing interests they didn't have time for while working. As energy and mobility naturally shift in later years, spending on those categories often decreases. This can be offset, however, by rising healthcare and support costs in the final phase of retirement.

Why does this matter for your retirement budget calculator? Because building a single monthly budget number and holding it constant for 25 or 30 years may not capture the reality of how your life will actually unfold. Some people plan for a higher spending phase early, a more moderate middle phase, and a conservative estimate for later years with a separate reserve for healthcare contingencies.

Thinking about how long your money needs to last is closely tied to this. Our post on whether your money will last explores this question in depth and is worth reading alongside your budgeting work.

Once you've built your bottom-up budget, it's useful to compare it against data on what retirees actually spend. The Bureau of Labor Statistics publishes its Consumer Expenditure Survey annually, which breaks down average spending by age group.

According to BLS Consumer Expenditure data, households headed by someone 65 or older spend less on average than younger households, but the breakdown across categories is revealing. Housing consistently represents the largest share of retiree spending, followed by transportation, healthcare, and food. What's notable is how much individual variation exists around any average, which reinforces why a personalised budget matters more than relying on population averages.

Some useful benchmarks to pressure-test your estimates:

• Housing often runs 30-35% of total retirement spending for those who still carry a mortgage, and lower for those who've paid it off. If you're thinking about paying off your mortgage before retiring, this context is worth considering.
• Healthcare tends to grow as a share of spending with age, often becoming the second or third largest category for retirees in their 70s and beyond.
• Transportation often decreases relative to working years once commuting ends, though it varies significantly based on lifestyle and location.
• Food spending patterns can shift notably in retirement. Many retirees cook more at home but also dine out more often, since they have the time.

The point of this comparison isn't to match some average; it's to identify any categories where your own estimate looks dramatically out of line and ask whether that's intentional or an oversight.

Once you've worked through each category, total everything up for a monthly figure. Then do a few things with that number before treating it as final.

Add an inflation adjustment. If you're 10 years from retirement, the costs you're estimating today will be higher by the time you're actually spending that money. The Bureau of Labor Statistics tracks inflation data, and while future rates are uncertain, many planners use a long-term inflation assumption of 2-3% for general expenses and somewhat higher for healthcare costs specifically.

Build in a buffer. Unexpected expenses happen in retirement just as they do in working life, maybe more so as homes age, health changes, and life throws surprises. Many financial planners suggest having a separate emergency reserve on top of your regular retirement budget, not included in your standard monthly estimate.

Test it against your income sources. Once you have a monthly spending estimate, you can compare it against your expected income from Social Security, any pension, and portfolio withdrawals. If the gap between income and expenses is larger than expected, that's important information to have now while you still have time to adjust your plans.

Revisit it regularly. A retirement budget built five years before you retire is a starting point, not a finished document. Life changes, and your budget estimates should change with it. Many people find their estimates get considerably more accurate as retirement approaches and their life circumstances become clearer.

This kind of budgeting work is also valuable input for a financial adviser. The more specific and realistic your spending picture, the more useful the conversations about savings targets, withdrawal strategies, and whether your plan holds together across different market scenarios.

Please note: This article is intended for general educational purposes only. It does not constitute personalised financial, tax, or investment advice. Every person's financial situation is unique, and the considerations covered here may not apply to your specific circumstances. Before making any significant financial decisions, consulting with a qualified financial adviser, tax professional, or other licensed expert is strongly encouraged.