Guide
Most of the moves that save you money or set up a better January can't happen on December 31 itself — they need lead time. Here's the order to do them in, starting now.
Every year-end "tax tip" list tells you to buy equipment, true up your books, and get your paperwork in order before the year closes. What those lists skip is that most of those items have a lead time attached. A van upfit or a piece of equipment has to be purchased and placed in service — not just ordered — to count for this tax year. Your bookkeeper needs weeks, not days, to reconcile twelve months of receipts. And chasing a subcontractor for a W-9 in the last week of December is a lot slower than it looks, especially around the holidays.
So treat this as a six-week project starting now, not a weekend in late December. Here's the order that actually works.
If you're planning to buy a truck, trailer, tools, or shop equipment and want it to count toward this year's Section 179 deduction, the clock that matters is delivery and install, not the purchase order date. A lift, a van shelving system, or a larger piece of equipment can easily have a 3–6 week lead time once you factor in financing approval and installer scheduling.
Rule of thumb: if it needs to be installed or delivered before it's usable, order it by Thanksgiving week. If it's an off-the-shelf tool you can pick up same-day, you've got until New Year's Eve.
We've got a dedicated breakdown of the current-year deduction limits and how the math works in our Section 179 vehicle and equipment deduction guide — check that for the actual dollar limits before you commit to a purchase, and run the numbers through the job profitability calculator to confirm the purchase actually pencils out against the jobs it'll help you win or finish faster.
The fourth-quarter estimated payment for most contractors is due January 15. The mistake we see most often: people pay the same amount they paid in Q1 or Q2, even though revenue or profit moved a lot over the year. If you had a strong fall — a lot of trades do, between the pre-winter rush and holiday installs — your actual tax liability is probably higher than what a flat quarterly number assumes.
Pull your real year-to-date profit, not revenue, before you calculate the payment. Revenue minus materials, labor, and overhead gets you closer to the number that actually matters; our break-even calculator is a fast way to see where your real margin sits if you haven't checked it since summer. For the deadline mechanics and what counts as "safe harbor," see our quarterly estimated taxes guide — and check the specific numbers with your accountant, since safe-harbor rules depend on your prior-year tax.
If you paid any subcontractor above the reporting threshold this year, you'll need a W-9 on file for them and a 1099-NEC (or 1099-K, if paid through a payment app) issued by January 31. The forms themselves take ten minutes each. The part that eats a whole Saturday is tracking down subs who've moved, changed their business name, or just don't respond to a text about tax paperwork. Start that outreach in November while people are still reachable and not buried in their own year-end crunch.
See our guides on the 1099-NEC threshold for subcontractors and the 1099-K threshold for payment apps for the current dollar cutoffs. If this kind of repetitive paperwork chase — W-9 requests, follow-up texts, form prep — is exactly the stuff that falls through the cracks when you're busy running jobs, that's the kind of admin work we take off contractors' plates through our done-for-you service.
Raising prices mid-job or mid-contract is awkward. Raising them on January 1, framed as a routine annual adjustment, is normal and expected — customers barely blink. If materials, fuel, insurance, or labor costs crept up this year (and they almost always do), build the increase into next year's price book now instead of eating the margin loss through next spring.
A typical annual adjustment runs 3–8% depending on how far behind your pricing has fallen. If you haven't raised prices in over a year, you're probably underpriced by more than you think.
Run your numbers through the hourly rate calculator to see what you actually need to charge to hit your income goal next year, and read our guide on raising prices on existing customers for how to message it without losing people.
General liability and workers' comp policies often renew around January 1, and if you auto-renew without checking, you can get locked into last year's rate even after a slow or a strong year changed your payroll numbers. Pull your renewal notice now and compare it against your current revenue and crew size — a workers' comp audit later in the year can produce a surprise bill if your payroll estimate is stale. See our guide on avoiding a workers' comp audit surprise.
If you sell maintenance plans or service agreements, this is also the moment to review whether last year's pricing still covers your costs heading into a slower stretch — our maintenance plan pricing guide walks through that math.
If you're not tracking mileage with an app, now is the time to reconstruct a defensible log from calendar entries, fuel receipts, and job addresses — not in April when you've forgotten which jobs you drove to in February. Same goes for job costing: if you estimated a job's materials and labor back in March and never checked the actual numbers against the bid, December is your last realistic chance to close that loop while the details are still recoverable. Our job costing without fancy software guide covers a simple way to do this with a spreadsheet.
If you want a printable version of this whole checklist with the dates filled in, plus a price book template for your 2027 rate changes, the Operations Kit ($19) has both.
You generally need to furnish 1099-NEC forms to subcontractors by January 31 and file copies with the IRS by the same date. Start collecting W-9s now so you're not chasing people in the last week of January.
For a Section 179 deduction in the current tax year, equipment generally needs to be purchased AND placed in service (installed and usable) by December 31, not just ordered. If a van upfit, lift, or piece of equipment has a lead time, order it in November so install happens before year-end.
The fourth-quarter estimated tax payment for the current tax year is typically due January 15 of the following year. Check your actual year-to-date profit before you pay so you're not guessing off last year's number.