7 Money Tasks Every Solopreneur Should Do Before December 31
Sam's List Editorial | 2026-07-22
7 Money Tasks Every Solopreneur Should Do Before December 31 Solopreneurs have a specific December problem. There is no finance team, no HR reminder, and a handful of tax moves that only work if you make them before the calendar flips. Miss the window and you are stuck paying more in April with no way to fix it. These are the year-end money tasks worth doing before December 31, while you still can. The short version: clean up what happened this year, and lock in the moves that have a hard deadline. Here is the list. 1. Reconcile and Catch Up Your Books You cannot plan around numbers you do not have. Before anything else, get your books current: match every bank and card transaction, categorize income and expenses, and reconcile through the most recent month. A solopreneur who waits until spring is planning blind during the one window when planning still helps. The risk of skipping this is not just stress. Without clean books you will miss deductions you earned, misjudge your income, and make the rest of this list guesswork. Current books are the foundation for every task below. 2. Check Your Estimated Taxes and the Q4 Payment Solopreneurs pay taxes as they go through quarterly estimates, and the fourth-quarter payment is due in mid-January. If you have underpaid all year, this is your last real chance to close the gap and reduce an underpayment penalty. The safe-harbor rules generally protect you if you have paid in either 90 percent of this year's tax or 100 percent of last year's, with a higher threshold for higher earners. Run a rough projection now so the January payment is a decision, not a surprise. Confirm the current thresholds, since they can change year to year. 3. Fund a Retirement Account While the Window Is Open Retirement contributions are one of the few deductions that also build your own wealth. A SEP-IRA or a Solo 401k lets a self-employed person shelter a meaningful share of net earnings, and the amounts are far higher than a standard IRA. Timing matters and the two accounts differ. A Solo 401k generally must be established by December 31 to make employee contributions for the year, even if funding can follow later, while a SEP can often be set up and funded up to the filing deadline. If you want the 401k option for this year, do not wait until January to open it. 4. Organize Receipts and Separate the Real Deductions Deductions you cannot document are deductions you cannot safely take. Pull together receipts, mileage logs, home office details, and any large purchases, and separate genuine business expenses from personal ones you ran...
