Top Retirement Planning Mistakes and How to Avoid Them

Plenty of people know their account balances down to the dollar but only have a fuzzy sense of what retirement will actually cost. In order to know if you’re ready, you need a solid number, built from these pieces:

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  Everyday living costs: Groceries, utilities, transportation, insurance, phone and streaming, household help, all the ordinary spending that doesn't stop when work does. Start from what your household actually spends now, rather than assuming retirement automatically shrinks the bills.
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  Illinois housing costs: Mortgage or rent, insurance, upkeep, and, this one stings in Illinois, property taxes. Illinois has the second-highest property taxes in the country, with an effective rate around 2%, so even a paid-off home still comes with a serious annual bill.2 Qualifying seniors may be able to lower it through programs like the Senior Citizens Homestead Exemption or the Assessment Freeze, but confirm your eligibility rather than assuming.
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  Lifestyle spending: Travel, dining out, hobbies, club memberships, trips to see the grandkids, whatever makes retirement feel like retirement. If it's part of the life you want, it belongs in the budget rather than tacked on as an afterthought.
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  Irregular big expenses: A new roof, a replacement furnace, another car, making the house more accessible, helping a kid with a down payment. These don't show up monthly, which is why a budget built only on monthly bills looks deceptively low.
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  Inflation: Today's number is just the starting line. Over a retirement that could run 30 years, groceries, property costs, services, and healthcare all creep upward, so the plan has to leave room for your costs to grow.

You spend 40 years piling money into 401(k)s, IRAs, and brokerage accounts, and then, overnight, you have to turn that pile into a monthly paycheck. Without a system, people tend to just pull money out whenever checking runs low, which is a recipe for trouble.

A workable income plan usually comes down to a few moves:

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  Start with the gap rather than a random withdrawal number. Add up your dependable income, Social Security, any pension or annuity, and see what's left for your portfolio to cover.
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  Decide which accounts fund your everyday spending, so you know where your paycheck comes from instead of raiding whatever account is handy.
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  Keep big one-time costs, a car, a trip, a home project, separate from your regular withdrawals, so one expensive year doesn't accidentally reset your baseline spending.
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  Hold an appropriate amount of cash and relatively lower-volatility, accessible assets so that a surprise doesn't force you to sell investments at a bad moment.
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  Build some flex into the amount you pull, so you can ease off in a rough market or a high-inflation year.
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  Revisit that number as you go. The amount you withdraw in year one shouldn't be a formula you blindly repeat for the next 25.

A portfolio built for your 40s often gets carried straight into retirement without anyone asking whether it still fits. But the job of your money changes the day you stop adding to it and start living off it, and your risk should change right along with it.

A few risk mismatches we watch for:

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  Too much stock exposure gets riskier once you're withdrawing instead of contributing, because a big drop lands while you're also taking money out.
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  Too much cash is the opposite trap. Play it too safe and your money may not grow enough to keep up with inflation over a 25 or 30-year retirement.
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  Too much concentration, in one stock, your old employer's shares, one sector, or a single property, ties too much of your future to one outcome.
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  Skipping rebalancing lets years of market moves push your portfolio into more risk (or less) than you ever signed up for.
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  Sequence-of-returns risk, a bad market early in retirement while you're withdrawing, can do lasting damage that the same downturn later wouldn't.
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  Reacting to scary headlines with big, sudden changes can lock in losses and derail a good plan at the worst possible moment. The fix is tying your risk to your actual withdrawal needs, timeline, and comfort level rather than the news cycle.

We regularly meet retirees who did their estate planning years ago, checked the box, and never looked again. Meanwhile, families change, assets grow, and old documents drift out of sync with reality. A few things are worth a fresh look:

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  Wills and trusts: Make sure they still reflect your family as it is now, the right heirs, the current assets, any charitable wishes, and how you actually want things handled. Life changes; the documents should keep up.
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  Beneficiary designations: Assets with valid beneficiary designations generally pass according to those designations rather than under the terms of a will.
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  Powers of attorney and healthcare directives: Confirm the people you named to make financial and medical decisions are still the right ones, still around, and still willing to serve if it comes to that.
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  Account titling and trust funding: For certain trust-based estate plans, proper account titling and trust funding can be important to ensuring that assets are administered as intended. Payable-on-death and transfer-on-death setups need to match the plan rather than fight it.
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  Illinois estate tax: This is the big Illinois-specific trap. Illinois taxes estates over $4 million, far below the multimillion-dollar federal exemption, and it doesn't let spouses share the exclusion.6 Between a paid-off home, retirement accounts, and life insurance, more Illinois families cross that line than expect to, so it's worth checking where you stand.