How to Build a Retirement Budget That Actually Works

The old rule of thumb says you’ll need 80% of your pre-retirement income in retirement. Which is a nice round number that tells you almost nothing useful. Your actual retirement spending depends on your actual life — where you live, what you owe, how healthy you are, and what you plan to do with your time. A real retirement budget starts with real numbers, not generic percentages.

Step 1: Map Your Income Sources

Before you can build a spending plan, you need to know what’s coming in. Most retirees have income from multiple sources, and each one has different timing, tax treatment, and reliability.

• Social Security: Check your estimated benefit at ssa.gov. The amount depends on when you claim — every year you delay past 62 (up to 70) increases your monthly check by about 7–8%.
• Pension: If you have one, get your benefit estimate in writing from your plan administrator.
• Retirement accounts: 401(k)s, IRAs, Roth accounts. These are pools you draw from, not fixed income — so you control the timing and amount.
• Other income: Rental properties, part-time work, annuities, taxable investment accounts.

Write down each source, the monthly or annual amount, whether it’s guaranteed or variable, and when it starts. This is your income floor. Everything else is built on top of it.

Step 2: Track Your Actual Spending

If you haven’t tracked your spending in the last 3–6 months, start now. Not what you think you spend. What you actually spend. Credit card statements, bank statements, cash withdrawals. Categorize everything.

Pay special attention to these retirement-specific costs that people consistently underestimate:

• Healthcare: Medicare premiums, Medigap or Advantage plan costs, dental and vision (Medicare doesn’t cover those well), prescriptions, and out-of-pocket maximums. A healthy 65-year-old couple should plan for $6,000–$12,000 per year in healthcare costs beyond premiums.
• Housing: Even if your mortgage is paid off, you still have property taxes, insurance, maintenance, and repairs. Roofs, furnaces, and plumbing don’t care that you’re on a fixed income.
• Taxes: Retirement income is not tax-free. Social Security may be partially taxable, traditional IRA withdrawals are fully taxable, and RMDs can push you into unexpected brackets.

Step 3: Build in the Things People Forget

A retirement budget isn’t just bills. It’s also life. And retirement has a spending pattern most people don’t expect: spending tends to be highest in the first 5–10 years (travel, hobbies, projects), drops in the middle years, and then spikes again in the later years due to healthcare and long-term care costs.

Build line items for:

• Travel and experiences (be honest about what you’ll actually do)
• Gifts and family support (grandkids, weddings, helping adult children)
• Home modifications as you age (grab bars today, accessibility ramps later)
• An emergency fund — 6–12 months of expenses in cash or near-cash, separate from your investment portfolio
• Long-term care — whether through insurance, savings, or both, this needs a plan

Step 4: Stress Test It

A budget that works when the market is up and your health is good isn’t really a budget. It’s a wish. Run your numbers against a few bad scenarios: a market drop of 20–30% in your first few years of retirement. An unexpected $15,000 medical expense. A major home repair. A spouse’s health declining and needing part-time care.

You don’t need every scenario to work perfectly. You need to know which ones would hurt and have a plan for them. That might mean keeping a larger cash buffer, carrying long-term care insurance, or having a part-time income option in your back pocket for the first few years.

The goal isn’t a budget that never changes. It’s a budget you actually revisit every year, adjust as your life shifts, and trust enough to stop worrying about money at 2 a.m.

A good retirement isn’t about having the most money. It’s about knowing exactly where yours is going.

Free planning tools and Transition Navigator at lumeway.co

---

This post is for informational purposes only and does not constitute legal, financial, or medical advice. Consult a licensed professional for guidance specific to your situation.