Fall admin checklist: Everything to lock in before year-end

The FSA is the single most expensive thing on most people's December list, and it is also the easiest one to miss. The funds went into the account pre-tax during the year, which makes them feel free in a way that obscures how much is actually sitting there. Many employers run a calendar-year plan where every unused dollar at midnight on December 31 reverts to the employer.

The fix is unglamorous. Log into your benefits portal in early November and write down the exact balance. Book the dental cleaning, eye exam, and any pending physical now, while providers still have December slots. Order replacement contact lenses, prescription sunglasses, and any over-the-counter eligible items (sunscreen, first-aid supplies, period products, certain pain relievers) through an FSA-eligible retailer. Most plans accept claims for spending through the run-out period in the following January, but the spending itself has to happen by December 31.

A handful of plans offer a small carryover (around $640 in 2024 in many cases) or a grace period through mid-March. Both are determined by the employer, not the IRS, so the only reliable answer is the one in your specific plan documents. Read the actual rules once, not the corporate intranet's interpretation of them.

Open enrollment is the one chance per year to change your health insurance, add a dependent, adjust FSA or HSA contributions, and switch dental or vision plans. Most employers run a window of two to four weeks ending in mid-November. ACA marketplace enrollment runs November 1 through January 15 in most states. Outside those windows, you cannot make changes without a qualifying life event.

The default move is to keep last year's plan, which is often the wrong choice for two reasons. Plans change every year (premiums, deductibles, network coverage, drug formularies), and your circumstances change every year (new prescriptions, a planned procedure, a baby, a move). A 15-minute review of the plan options against what you actually used this year is almost always worth it. The cost of being on the wrong plan for 12 months is meaningfully higher than the cost of an hour reading benefit summaries.

For employer plans, also revisit FSA and dependent care FSA elections at the same time. Setting next year's FSA contribution too high recreates the same December forfeiture risk. Setting it too low means leaving pre-tax savings on the table.

The flu shot is the single highest-impact health item on this list. The CDC recommends everyone six months and older get vaccinated annually, ideally by the end of October, since antibody response takes about two weeks to develop and flu activity typically peaks between December and February. Most pharmacies and primary care offices offer it as a walk-in, and it is covered with no copay under almost every health plan and Medicare Part B.

If you are eligible, the same fall window is the right time to update your COVID booster, RSV vaccine (for adults 60+ and pregnant women in the recommended window), Tdap if it has been more than ten years, and the shingles vaccine if you are 50 or older and have not completed the series. Doing them in one or two visits is materially easier than going back every month.

Pharmacies running on appointment-only systems start filling up by mid-October as flu activity rises. Walk-in availability shrinks the closer you get to Thanksgiving. Doing this in September or early October takes about 20 minutes; doing it in late November can take an hour and a half of waiting.

The 401(k) and 403(b) deadline is December 31, and it is enforced through payroll. If you want to increase your contribution for the year, the change has to clear HR and run through enough remaining pay periods to actually move the total. That practically means making the change by mid-November at the latest. Anyone trying to bump their contribution rate in the last week of December usually finds that there is only one paycheck left and the math does not work.

Traditional and Roth IRA contributions are easier to leave for later. The deadline is the April tax filing date, which means you can fund your prior-year IRA in spring. HSAs follow the same April deadline. That said, doing it now while the year's spending is fresh tends to produce more accurate decisions than doing it in April with a tax software prompt.

If you are self-employed, the timing is different. SEP-IRA and Solo 401(k) contributions can be made up until the tax filing deadline (with extensions, even later for SEPs), but the Solo 401(k) employee contribution generally has to be elected by year-end. Confirm your specific plan rules before assuming spring is fine.

A handful of tax decisions only count if they happen in the calendar year. Charitable donations have to be made by December 31 to deduct on the current year's return. Tax-loss harvesting (selling investments at a loss to offset gains) only counts if the trade settles before year-end. If you are required to take a Required Minimum Distribution from a retirement account, the deadline is also December 31, and the penalty for missing it is a 25% excise tax on the amount you should have taken.

Two specific moves are worth thinking about now rather than in late December. The first is bunching charitable giving into a single year (often via a donor-advised fund) if your total annual giving is close to the standard deduction threshold. The second is a Roth conversion if you have a low-income year and room in a lower bracket. Both require time to set up correctly, and neither is something to rush in the last week of the year.

For the self-employed and gig workers, the fourth-quarter estimated tax payment is due January 15 of the new year, but the planning happens in November and December. Check year-to-date income, calculate your safe-harbor amount, and adjust the Q4 payment accordingly. See our pillar on quarterly estimated tax reminders for the full schedule.

Annual subscription renewals tend to cluster in December and January because that is when many people first signed up. Streaming services, fitness apps, productivity tools, software licenses, domain names, and antivirus subscriptions all auto-renew at prices that have usually gone up since you originally subscribed. The charge appears on the card after a busy holiday spend and gets lost in the broader December bill.

A short audit takes about 30 minutes and almost always pays for itself. Pull up your bank and credit card statements for the past year. Sort by recurring charges. For anything you have not used in 60 days, cancel it before the renewal. For anything you do use, check if there is a cheaper plan or an annual rate that beats the monthly rate. Many services quietly migrate users to higher-priced tiers and never tell you a cheaper one still exists.

The pattern repeats every year, which is what makes a calendar-based reminder effective here. Tagging each subscription's renewal date once means you get advance notice in future years instead of spotting the charge after it has already cleared.

Holiday travel pricing follows a predictable curve. Airfare and rail fares for Thanksgiving and the December holidays usually hit their lowest point about six to eight weeks before the date and rise sharply in the last three weeks. Hotels in popular destinations follow the same pattern. The people who pay the most are not the ones buying last-minute on a whim. They are the ones who waited until the last week of November because they were too busy to decide earlier.

Gift planning has a similar shape. Most gift-giving anxiety comes from leaving the decision until two weeks before the date, when shipping windows tighten and selection thins. Building the list in early November and ordering by Black Friday gives you the best price, the widest selection, and time for replacements if something arrives damaged. Holiday cards are the same: design and order by mid-November to mail by the first week of December.

The trick is that none of this feels urgent in October. By the time it does feel urgent, the cost has already gone up. A small advance reminder beats a large reactive scramble.

Home maintenance is the category most likely to be missed by people who are otherwise good at admin, because the deadlines are not on a calendar. They are dictated by weather. Furnace tune-ups in November cost a fraction of an emergency call in January, and HVAC technicians get booked out three to four weeks in advance once the first cold snap hits. Gutter cleaning before the leaves freeze in is straightforward; chipping ice out of frozen gutters in February is not.

The reliable fall list looks roughly the same in most climates. Schedule the furnace service. Replace the furnace filter. Clean the gutters once leaves have dropped. Drain and shut off exterior hose bibs in any region that freezes. Test smoke and carbon monoxide detectors and replace batteries before heating season starts (heating is when CO incidents climb). Reverse ceiling fans to push warm air down. If you have a chimney and a fireplace you actually use, schedule the inspection.

None of these tasks are difficult on their own. The cost of skipping them is occasional but expensive. A frozen pipe, a clogged dryer vent fire, or a furnace that fails on Christmas Eve all cost five to ten times more than the preventive version of the same job. Making the appointments in October prevents most of it.