12 Money Moves That Can Derail Your Retirement

Retirement mistakes get more expensive when there are fewer working years left to undo them. That does not mean everyone in their late 50s or 60s should suddenly become ultra-conservative. It does mean big financial decisions deserve a second look before the paycheck stops. Social Security timing, retirement-account withdrawals, Medicare enrollment, portfolio changes, family loans, and even generous gifts can have consequences that last for years.

Some of these moves can be perfectly reasonable in the right situation. The real danger is making them quickly, emotionally, or without understanding the tax and retirement rules attached to them. Here are 12 money moves near-retirees should think very carefully about before pulling the trigger.

Social Security can start as early as 62, but filing early can permanently reduce the monthly retirement benefit. For people born in 1960 or later, full retirement age is 67, and claiming at 62 can cut the worker benefit by as much as 30%. Waiting beyond full retirement age increases the benefit through delayed retirement credits until age 70. That does not mean everyone should wait. Health, cash needs, marital status, and longevity expectations all matter. The mistake is treating 62, 67, or 70 as an automatic answer. Before filing, compare the actual monthly benefit at several claiming ages and consider how the choice affects income for the rest of retirement.

Leaving an employer does not mean the old 401(k) has to become spending money. A taxable distribution generally counts as income, and if the money is paid directly to you from an employer plan, 20% federal withholding usually applies to an eligible rollover distribution. If you are younger than 59 1/2, an additional 10% tax may also apply unless an exception covers you. A direct rollover to an IRA or another eligible plan can usually keep the money tax-deferred without the mandatory 20% withholding. There are situations where taking cash is necessary, but draining a retirement account simply because the job ended can turn decades of savings into a very expensive severance check.

A retirement account can make a new car, dream vacation, or mortgage payoff look deceptively affordable. The problem is that a large withdrawal from a traditional IRA or pretax retirement plan is generally taxable in the year it is received. One unusually large distribution can increase taxable income, potentially make more Social Security benefits taxable, and affect Medicare premiums later. Medicare's income-related surcharges generally use tax-return income from two years earlier. That does not make large withdrawals automatically wrong, but the tax bill should be part of the purchase price. Before pulling six figures from a retirement account, compare the after-tax cost with other ways to fund the expense.

Roth conversions can be a useful retirement-planning tool, especially in lower-income years. Doing a massive conversion without modeling the tax impact is a different story. When untaxed money from a traditional IRA is converted to a Roth IRA, that amount is generally included in gross income for the year of the conversion. A large conversion can push income higher, affect the taxation of Social Security, and potentially trigger higher Medicare Part B and Part D premiums later through IRMAA. Smaller conversions spread across several years may work better for some households. The point is not to avoid Roth conversions. It is to avoid treating a six-figure conversion like a simple account transfer with no tax consequences attached.

A stock that performed well for years can quietly become a huge share of a portfolio, especially when it is also the stock of a longtime employer. That concentration feels comfortable right up until the company has a bad year. The SEC describes diversification as spreading money among different investments so one loss does not determine the fate of the entire portfolio. Near retirement, that matters even more because there may be less time to recover from a major hit. Selling a concentrated position can create tax considerations, so this is not necessarily a one-day cleanup job. But entering retirement with a large portion of your nest egg tied to one company turns a personal retirement plan into a very concentrated bet.

Retirement is a good time to reassess risk. It is not a good time to make an all-or-nothing portfolio decision because the market had a terrible week. The SEC notes that cash is generally less volatile than stocks and bonds, but its major long-term risk is inflation eroding purchasing power. Selling stocks after a sharp decline can also lock in losses and leave an investor on the sidelines when markets recover. Near-retirees often do need more stability than they did at 35, but that usually calls for a deliberate asset-allocation plan rather than a panic button. Decide how much money needs to be safe and liquid before volatility arrives, then rebalance around that plan instead of reacting to headlines.

An annuity can provide features some retirees genuinely value, including guaranteed income in certain contracts. It can also come with layers of costs and restrictions that are easy to miss in a sales pitch. The SEC warns that variable annuities can carry insurance charges, administrative fees, underlying fund expenses, optional rider fees, and surrender charges for taking money out during a specified period. Some surrender periods can last for years. None of that means annuities are automatically a bad deal. It means signing one near retirement without understanding the fees, withdrawal rules, guarantees, and surrender schedule can lock up money at exactly the stage of life when flexibility may matter most.

Helping an adult child or grandchild qualify for a car or private student loan can feel harmless because someone else is supposed to make the payments. Legally, that is not how co-signing works. The Consumer Financial Protection Bureau says a co-signer is obligated to repay the debt if the primary borrower does not, and missed payments or default can damage the co-signer's credit as well. A lender may also pursue the co-signer for the debt. That risk looks very different when employment income is about to disappear. If paying the entire loan yourself would damage your retirement plan, signing the paperwork means accepting a financial obligation your future budget may not be able to absorb.

Leaving work at 62 sounds very different once health insurance is added to the spreadsheet. Medicare eligibility generally begins around age 65, so retiring earlier can leave a coverage gap that lasts months or years. People who lose job-based insurance when they retire before 65 can generally use a Health Insurance Marketplace Special Enrollment Period, and some may have access to retiree coverage or COBRA. The cost can vary dramatically by household. The mistake is setting a retirement date first and figuring out insurance second. Price the bridge years before giving notice, including premiums and expected out-of-pocket costs. A retirement budget that works only because health care was left out is not really a retirement budget.

Medicare has deadlines, and missing them can be expensive. The Initial Enrollment Period around age 65 generally lasts seven months, beginning three months before the month you turn 65 and ending three months after it. People with qualifying employer coverage may be able to use a Special Enrollment Period instead. Without an exception, the Part B late-enrollment penalty generally adds 10% for each full 12-month period a person could have had Part B but did not enroll, and that surcharge can continue as long as the person has Part B. Drug coverage has its own late-enrollment rules. Turning 65 while still working is not a reason to guess. Check how your employer coverage coordinates with Medicare before the birthday arrives.

Retirement accounts do not stay untouched forever. Under current federal law, required minimum distributions generally begin at age 73 for people who reach that age before 2033, while the applicable age rises to 75 for people who reach 74 after 2032. The exact rules depend on the account and whether someone is still working, and Roth IRAs owned by the original owner do not require lifetime RMDs. Missing a required distribution can still be costly: the IRS says the shortfall may face a 25% excise tax, reduced to 10% when corrected within the allowed two-year window. RMD planning should start before the first deadline, not after a tax form reveals that one was missed.

Helping family while you are alive can be deeply rewarding, but near-retirees should be careful about giving away large assets before understanding their own long-term care plan. Medicaid rules for certain long-term care services can examine transfers made during a 60-month look-back period, and transfers for less than fair market value can create a period of ineligibility in some situations. Not every gift causes a penalty, and Medicaid rules are complicated and state-administered. The bigger point is simple: once a house, cash, or investments have been given away, they may no longer be available for your own care. Large gifts deserve the same planning attention as large withdrawals, especially when retirement savings must last an unknown number of years.