Is December too late to lower this year's taxes?

December is late, but it is not useless. January is when the door closes. You still have a few weeks to make moves that can lower your tax bill for this year, though the options are narrower than they would have been in October.

Equipment purchases can still help if the equipment is placed in service before December 31. That means bought, delivered, installed, and ready to use by year end. A new treatment chair or piece of diagnostic equipment sitting in a warehouse on January 2 does not count for this year. If you were planning a purchase anyway, accelerating it into this year can let you deduct it under Section 179 or bonus depreciation rules.

Retirement plan establishment has a real deadline for certain plans. A Solo 401(k) must be established by December 31 to allow contributions for this tax year. SEP-IRAs are more forgiving and can be established up until your tax filing deadline including extensions. But if you want the Solo 401(k) option with its higher contribution limits and loan provisions, December is your window to set it up.

Expense timing works for cash-basis businesses, which most medical business owners operate as. Prepaying certain deductible expenses before year end can shift the deduction into this year. Professional subscriptions, business insurance premiums for early next year, and supplies you will use soon are fair game. This is not a dramatic savings, but it moves dollars from one column to another when the timing helps.

Estimated tax corrections can reduce penalties even if they do not change your total tax. If you have underpaid your quarterly estimates and a big tax bill is coming, a catch-up payment before January 15 can lower or eliminate underpayment penalties. The tax is still owed, but the penalty charges attached to it shrink.

What December cannot do is make up for a full year of missed opportunities. The business owners who save meaningful amounts on taxes are the ones who structure their entity correctly early, plan their income and deductions across the year, and think about retirement contributions in June rather than scrambling in December. That is the difference between reactive tax prep and proactive tax strategy.

If you are reading this in December and realizing you could have done more with some lead time, that is worth remembering for next year. Working with a CPA for medical businesses year-round means these conversations happen when there is still time to act. If you want to talk through what moves might still make sense for this year or set up planning for next year, book a consultation.