Veterinarian Year-End Tax Planning Checklist (2026)

Most of your highest-value tax moves for 2026 have hard December 31 deadlines — retirement plan establishment, equipment placed in service, Roth conversions, and charitable contributions must all happen before midnight on December 31. Miss them and no filing-season maneuver can fix it. This checklist organizes every major action by deadline so you can work through them with your CPA before the windows close.

Summary: Key Deadlines at a Glance

1. Retirement Plan Contributions: The Biggest Lever

Retirement contributions are the most powerful tax tool available to vet practice owners. A practice owner netting $400,000 and age 52 can shelter over $200,000 pre-tax in a single year by combining a Solo 401(k) with a cash balance plan — at a 37% marginal rate, that's $74,000+ in deferred taxes. But the mechanics depend on timing.

Solo 401(k): establish by December 31, fund profit-sharing later

If you don't already have a Solo 401(k) and want to shelter income from this tax year, you must establish the plan by December 31, 2026.¹ You do not need to fund it by December 31 — employer profit-sharing contributions can be made through your tax return filing deadline, including extensions (October 15, 2027 for an extended return).

S-corp vet owners: your employee deferral must be withheld from W-2 paychecks issued before December 31. If you realize in late December that you haven't maxed your deferral, you need your payroll provider to process a year-end true-up paycheck. Do not wait until after year-end — the election must occur within the tax year.

Sole prop/PLLC owners: you can elect your deferral up to December 31 by completing a contribution agreement with your plan provider. Some providers need a few business days to process — do this in early December, not Christmas week.

SECURE 2.0 catch-up mandate (§603): If your W-2 wages from any employer exceeded $145,000 in 2025, your 2026 catch-up contributions must be designated as Roth catch-up — you cannot make them pre-tax. This affects vet owners age 50+ paying themselves a W-2 from an S-corp. Confirm your plan documentation handles this before year-end.

Cash balance plan: act in October or November

If you're considering adding a cash balance plan to stack on top of your Solo 401(k), the plan must be established by December 31 of the first contribution year. Cash balance plans require actuarial design — most TPA firms need 4–6 weeks of lead time. If it's November and you haven't started, contact a TPA immediately. If it's mid-December, the window may have closed for this year.

For an existing cash balance plan, your actuary-calculated minimum funding must be met by the tax filing deadline — but December is when you should confirm your target contribution amount and verify you have cash available.

Group 401(k) — if you have W-2 staff

Once you employ W-2 veterinary technicians or receptionists, the Solo 401(k) shuts down and you need a group plan. The same deferral election rule applies: employee deferrals must be elected before December 31. Year-end is also when you verify your safe harbor contribution obligation (3% non-elective is due within 30 days of year-end, unless you use a QACA with 90-day grace) and plan for your new comparability profit-sharing allocation to maximize the owner's share. See the group 401(k) guide.

2. Equipment Purchases: Placed in Service by December 31

To claim a Section 179 deduction or OBBBA 100% bonus depreciation on equipment, the asset must be placed in service — actually installed and operational — by December 31. A purchase order signed December 29 doesn't qualify if the digital radiograph unit isn't delivered and working until January 4.

Common vet practice equipment qualifying for full expensing: digital radiograph units, ultrasound machines, anesthesia monitoring equipment, surgical tables, autoclaves, dental units for companion animal practices, cold laser therapy units, and practice management software with a useful life of more than one year.

Timing decision framework: If your 2026 practice income is higher than you expect 2027 income to be (planning to sell, reduce hours, or take parental leave), accelerating equipment purchases into 2026 maximizes the deduction value at the higher marginal rate. If 2027 will be a higher-income year, defer the purchase. The tax math is otherwise identical — only the deduction year changes.

For practice real estate improvements, see the practice building ownership guide — cost segregation and bonus depreciation on commercial property follow different rules than equipment.

3. S-Corp Payroll: Finalize Before December 31

If you operate your practice as an S-corporation, December is when you review your W-2 salary for reasonableness and process any final payroll adjustments before the year closes.

Reasonable compensation

The IRS requires S-corp owner-DVMs to pay themselves a reasonable W-2 salary for the clinical and management work they perform. There's no bright-line safe harbor, but a common benchmark is what you'd pay a replacement DVM doing the same work — typically $120,000–$220,000 for a practice-owner vet depending on practice type, location, and production volume. The IRS has successfully challenged artificially low salaries at practices with strong revenue; a $75,000 W-2 at a practice collecting $1.2 million is a red flag. Document your comp determination before year-end with a simple memo in your files.

The 25%-of-W-2 Solo 401(k) formula

For S-corp owners, the employer profit-sharing contribution is capped at 25% of your W-2 salary. This creates an important optimization: at a $192,000 W-2 salary, 25% × $192,000 = $48,000 — which, combined with your $24,500 employee deferral, hits $72,500 (slightly above the $72,000 415(c) cap, so the practical salary inflection point is ~$190,000). Salary above that doesn't add more 401(k) room but does cost you more in FICA. If you're below $190,000 in W-2 and want to maximize your 401(k), you may need a year-end payroll true-up before December 31. See the S-corp election guide for the full SE tax savings math.

2026 Social Security wage base

The 2026 Social Security wage base is $184,500.⁴ FICA (employee + employer combined 15.3%) applies on W-2 wages up to this amount, then only Medicare (2.9% combined) applies above it. For practice owners setting their own salary, this is a relevant data point: once your W-2 exceeds $184,500, additional salary costs only 2.9% in FICA rather than 15.3%.

4. Roth Conversion: Act Before December 31

Roth conversions must be completed by December 31 of the tax year — there is no extension. A conversion processed January 2, 2027 counts for 2027, full stop.

Year-end is valuable because you know (approximately) your 2026 taxable income and can calculate exactly how much bracket space you have available. The goal is to convert enough to fill your current bracket without spilling into the next one, paying the tax now at a predictable rate in exchange for tax-free growth and no future RMDs.

When Roth conversion makes sense for DVMs

• Vet residency or early associate years: income is at a career low ($46K–$100K). Converting while in the 22% bracket is often a strong move, especially with $200K+ of pre-tax debt in the mix from future retirement account contributions.
• Between jobs or parental leave: temporary income reduction creates a conversion window.
• Mid-career bracket fill: practice-owner DVMs in the 24% bracket who have room before hitting 32% can fill the gap with conversions.
• Pre-practice-sale glide path: in the 1–3 years before you sell, incremental conversions at your normal marginal rate are often better than waiting — the practice sale year will spike your income into the 37% bracket, NIIT ($200K/$250K threshold), and potentially multiple IRMAA tiers.

IRMAA awareness: watch the $109,000 threshold

2026 IRMAA surcharges are based on your 2024 MAGI. If you're already on Medicare or will be in two years, and your 2026 income (including the conversion) will be reviewed in 2028 for 2028 IRMAA: the first tier threshold for single filers is $109,000 and for MFJ it is $218,000.⁵ Exceeding the first tier adds $81.20/month to your Part B premium plus additional Part D costs. If you're near a threshold, know exactly how much bracket space you have before converting.

Backdoor Roth IRA

Most veterinarians earning above $153,000 (single) or $242,000 (MFJ) cannot make direct Roth IRA contributions. The backdoor route: make a non-deductible traditional IRA contribution ($7,500 for 2026;⁶ $8,600 for age 50+), then convert immediately to Roth. The contribution itself can be made through April 15, 2027 — but the conversion should happen within the same tax year to avoid potential pro-rata complications. Do your contribution and conversion in 2026 if you want it to be clean.

5. HSA Contributions: Fund by April 15

Unlike most year-end items, HSA contributions for 2026 can be made through April 15, 2027 — you have time. But December is the right moment to check your year-to-date HSA contribution and determine what's left to fill.

HSA contributions are triple-tax advantaged: pre-tax contribution, tax-free growth, tax-free withdrawal for qualified medical expenses. For DVMs who can afford to pay current medical costs out of pocket, investing the HSA and letting it compound for decades (then using it for Medicare premiums, dental, and vision in retirement) is one of the most efficient wealth-building strategies available. See the vet health insurance guide for HDHP and HSA strategy by employment type.

6. Charitable Giving: Strategies with December 31 Deadlines

Donor-Advised Fund (DAF) contributions

Contributing appreciated securities or cash to a DAF by December 31 locks in your 2026 charitable deduction — even if you don't direct the grants to specific charities until 2027 or later. For DVMs in the 37% bracket, contributing $50,000 of appreciated stock (instead of cash) avoids $10,000+ in capital gains tax on the appreciation while generating the full $50,000 deduction. Practical deadline: most DAF custodians process stock transfers within 2–3 business days, so initiate transfers by December 26 to ensure December 31 completion.

Qualified Charitable Distribution (QCD)

If you are age 70½ or older and have a traditional IRA, a QCD allows you to transfer up to $111,000 directly to a qualified charity in 2026.⁸ The amount counts toward your required minimum distribution but is excluded from your taxable income — better than taking the RMD, paying tax, and then deducting the donation. The QCD must be completed by December 31; the check must be issued by your IRA custodian and received by the charity by that date.

7. PSLF and IBR Recertification (Associate DVMs)

If you're on the PSLF track as a veterinarian at a qualifying employer (USDA, state agricultural agency, non-profit shelter or zoo, university teaching hospital), two timing items belong on your year-end checklist:

• Annual employment certification: Submit an Employment Certification Form to MOHELA for each qualifying year of employment. You can do this annually or at every job change. Doing it consistently creates a verified paper trail and catches employer-eligibility issues early.
• IDR recertification: Your IBR payment is based on your prior-year income. Recertify as soon as your AGI for the year is finalized (which may be as late as the tax filing deadline). If your income dropped significantly in 2026, recertify early to get lower payments counting toward the 120-qualifying-payment target sooner.
• SAVE plan status: As of 2026, the SAVE plan remains in legal limbo following court challenges. Most borrowers are on standard IBR or IBR-RAP. Confirm with your servicer which plan you're currently on before year-end to ensure you're making qualified payments. See the PSLF for veterinarians guide for employer qualification details.

8. Insurance and Estate Plan Review

Year-end is a natural time to review items that don't have hard tax deadlines but are easy to defer indefinitely:

• Disability insurance face amount: If your practice revenue or personal income grew significantly in 2026, your disability insurance benefit may no longer replace 60–65% of your income. Review coverage annually, especially if you went from associate to practice owner (own-occupation definitions and BOE needs change). See the disability insurance needs calculator.
• Life insurance and buy-sell agreement valuation: Most vet practice buy-sell agreements require annual valuation updates. If your EBITDA changed materially (hired an associate, lost a key client referral source, upgraded equipment), your formula-based valuation may be stale. Update the insurance face amounts to match the current formula value.
• Beneficiary designations: Retirement accounts and life insurance pass outside the will. After marriages, divorces, births, or deaths in the family, update beneficiary designations directly with the account custodian. A will cannot override an outdated beneficiary designation on an IRA or 401(k).
• Practice net worth snapshot: Compare your current net worth vs. age-based benchmarks for your career stage and path. See the vet net worth guide for DVM-specific benchmarks by age and career track.

Work Through This With a Specialist

Most of the highest-value items on this list — cash balance plan establishment, Roth conversion sizing, S-corp reasonable compensation, pre-sale income planning — require coordination between your CPA and a financial advisor who understands veterinary practice economics. A generalist CPA can handle the tax mechanics; a vet-specialized advisor can model the interaction between your practice sale timeline, corporate offer analysis, and retirement income strategy.