The Last 12 Months Before Retirement: A Month-by-Month Guide

Why the Final Year Matters More Than You Think

Most people picture retirement planning as something that happens over decades: contribute to your 401(k), max out your IRA, watch the balance grow. That part is real, but it’s not where the expensive mistakes happen. The costliest errors usually occur in the twelve months right before someone stops working, when big irreversible decisions get made quickly, sometimes under pressure, sometimes without a clear plan at all.

Social Security timing is a good example. Claiming a few years earlier or later than optimal can shift your lifetime benefit by a significant amount, and once you claim, you generally can’t undo it. Health insurance gaps, employer benefit cutoffs, and portfolio withdrawal sequencing all carry similar weight. None of these are complicated in isolation. The problem is that they all converge in the same short window, and if you’re not tracking them on a timeline, it’s easy to miss one.

This guide breaks the final year into manageable chunks so you can work through it steadily instead of scrambling in the last few weeks.

12 to 9 Months Out: Take Inventory

Locate every account you own

Make a full list of retirement accounts: old 401(k)s from previous jobs, IRAs, brokerage accounts, pensions, and any annuities. People who’ve worked multiple jobs often have money scattered across accounts they haven’t looked at in years. Write down the institution, account number, and approximate balance for each.

Get a real handle on expenses

Pull three to six months of bank and credit card statements and categorize the spending. Most people underestimate their actual monthly costs because irregular expenses (car repairs, gifts, annual subscriptions, home maintenance) don’t show up in a mental budget. You need a realistic number, not an optimistic one.

Check your Social Security statement

Log into your Social Security account online and review your earnings record for errors. Mistakes in reported wages happen more often than people expect, and they lower your benefit calculation. Fixing an error now is far easier than fixing it after you’ve filed.

9 to 6 Months Out: Model Your Income

Decide on a Social Security claiming strategy

You can claim as early as 62 or delay until 70, and the difference in monthly benefit is substantial. Claiming early locks in a lower payment for life. Delaying increases it. The right choice depends on your health, other income sources, whether you’re married (spousal and survivor benefits matter here), and how long you expect to need the income. This is not a decision to make casually or based on what a friend did. Run the numbers for your specific situation.

Map out your withdrawal order

Once you stop earning a paycheck, you’ll need to decide which accounts to draw from first: taxable brokerage accounts, tax-deferred accounts like traditional IRAs, or tax-free accounts like Roth IRAs. The order matters a lot for your tax bill over time. A common approach is to spend taxable accounts first, letting tax-deferred and Roth accounts keep growing, but your specific tax bracket and income needs may call for a different sequence.

Estimate your tax bracket in retirement

Many retirees are surprised that their tax situation doesn’t simplify once they stop working. Required minimum distributions, Social Security taxation thresholds, and Medicare premium surcharges (known as IRMAA) all depend on your income level. Get a rough estimate of what bracket you’ll land in during your first few retirement years so there are no surprises.

6 to 3 Months Out: Lock Down Healthcare and Benefits

Understand your Medicare enrollment window

If you’re retiring at or after 65, you have a specific enrollment window around your 65th birthday, and missing it can trigger permanent late-enrollment penalties. If you’re retiring before 65, you need a bridge plan: COBRA, a marketplace plan, or coverage through a spouse. Price this out now, because health insurance before Medicare eligibility can be one of the largest unexpected costs in early retirement.

Review employer benefits that end at retirement

Life insurance, disability coverage, and sometimes health savings account contributions stop the day you leave. Make a list of what disappears and decide what, if anything, you need to replace on your own.

Check pension elections carefully

If you have a pension, you’ll likely be asked to choose a payout option: a single-life annuity, a joint-and-survivor annuity, or sometimes a lump sum. This choice is usually permanent. A single-life payout is higher monthly but ends when you die, leaving a surviving spouse with nothing from that pension. Read the fine print and talk through the tradeoffs before signing anything.

3 to 1 Months Out: Finalize the Details

Set your actual retirement date

Coordinate this with your employer’s HR department, factoring in accrued vacation payout, final paycheck timing, and any bonus or severance schedules. Retiring mid-month versus end-of-month can affect benefit calculations, so ask HR directly rather than guessing.

Build a cash cushion

Set aside enough cash to cover several months of expenses so you’re not forced to sell investments during a market downturn right when you need the money. This buffer matters most in the first year or two, before your income streams are fully up and running.

Update your beneficiaries and estate documents

Beneficiary designations on retirement accounts override what’s written in a will, so check that they still reflect your wishes. This is also a good time to confirm your will, power of attorney, and healthcare directive are current.

The Last Month: Final Checks

• Confirm your final paycheck date and any accrued benefits payout
• Verify your health insurance coverage starts the day your employer coverage ends, with no gap
• Submit your Social Security application if you’re claiming now (applications can be submitted up to four months before you want benefits to start)
• Set up automatic transfers or withdrawals from your retirement accounts if needed for income
• Notify relevant institutions of your address or employment status change

A Simple Way to Stay on Track

None of these steps are individually difficult, but doing them out of order, or skipping one because it didn’t seem urgent, is how people end up with gaps in coverage, a suboptimal Social Security claim, or a tax bill they didn’t see coming. Treat the year before retirement like a project with a timeline, not a countdown to a single date. Working through it a few months at a time, in the right order, is what actually protects the decades of saving that came before it.

For the complete, structured playbook on this topic, see The Pre-Retirement Checklist: 12 Months of Financial Actions Before You Leave in our library. New here? Start with our free guide.