If you’re building in tech, Q4 isn’t just sprint-planning and GA launches, it’s when small, high-impact tax moves can unlock real cash flow. At ShayCPA, we work with founders every day who are juggling runway, board expectations, and hiring plans. Smart year-end planning helps you avoid surprises in April and gives you more control over cash flow.
Why year-end planning matters (especially now)
2025 brought meaningful federal tax changes. The One Big Beautiful Bill Act (OBBBA), signed July 4, restored 100% bonus depreciation and brought back immediate expensing for domestic R&D, two levers that tech companies can use before December 31st to reduce taxable income and extend runway. There are nuances (timing and what qualifies), but the headline is simple: more deductions, sooner.
If you operate in multiple states (hello, remote teams and distributed customers), evolving economic nexus standards and SaaS taxability rules can trigger obligations you didn’t have last year.
Optimize the timing of income and expenses
Year-end planning often means deferring income into 2026 or accelerating deductions into 2025, within the rules and consistent with your business reality.
SaaS example
You’re closing several annual contracts in late December. If you’re on accrual, your revenue recognition follows performance obligations, but billing timing and when services begin can influence 2025 income. Pushing a contract start date to January 2 can defer recognition without changing customer value. On the expense side, consider paying 12-month subscriptions that qualify under the “12-month rule” for prepaids, stocking up on cloud credits with a clear business purpose, and bringing forward contractor payments for work delivered by year-end.
Service/implementation example
If your consulting team will deliver a big milestone in early January, be careful about invoicing and acceptance criteria in December that could accelerate 2025 income. Meanwhile, lock in qualified equipment or tooling purchases (see bonus depreciation below) and ensure all 2025 costs (hosting, test devices, security tools) are captured and accrued.
Pro tip: model the Q4 estimate tax impact so you’re not overpaying when big deductions (R&D or bonus depreciation) hit. The cash you don’t send to the IRS in January can fund hiring or growth.
Maximize R&D tax credits (and deductions)
Two separate benefits work together:
- R&D deduction (Section 174A) – OBBBA lets you fully expense domestic R&E starting in 2025. Foreign research still generally must be capitalized and amortized over 15 years, so consider where work is performed. Transition rules can also help unwind prior-year capitalization.
- R&D credit (Section 41) – Still alive and well for qualified research. If you’re building software, training models, improving performance/reliability, or solving technical uncertainties, you may be eligible. The IRS continues to scrutinize claims; strong documentation (project descriptions, technical uncertainties, time tracking) is a must, and refund claims have specific information requirements. Coordinate your credit with 174A to ensure consistency in your disclosures on your tax filings.
What to do before Dec 31st:
- Inventory 2025 projects that meet the four-part test (permitted purpose, elimination of uncertainty, process of experimentation, technological in nature).
- Tighten time-tracking for engineers and product teams.
- If you’ve done substantial US-based research, update your tax method to reflect immediate expensing this year.
Pro-tip: Starting with tax year 2024, there were major revisions to Form 6765 R&D Tax Credit. Ensure you work with a tax professional who is fully aware of the changes.
Leverage bonus depreciation & strategic asset purchases
With OBBBA, 100% bonus depreciation is back for qualifying property acquired after roughly Jan. 19–20, 2025 (watch the “binding contract” rule). That means many tangible assets with a class life of 20 years or less – servers, networking gear, lab equipment, and manufacturing tools can be fully deducted when placed in service in 2025. Software and certain internal-use development may require separate analysis, but the window is favorable.
Action items:
- If you’re planning hardware refreshes or lab build-outs, place assets in service by year-end.
- Review purchase contracts to confirm acquisition dates don’t run afoul of the binding-contract timing.
- Pair bonus depreciation with a cost segregation study for leasehold improvements to maximize qualifying components.
For many founders, this is one of the cleanest ways to turn capex into immediate cash tax savings, useful if you’re eyeing a 2026 fundraise and want more runway in the interim.
Review equity compensation and 409A valuations
Granting options in late Q4? A current 409A valuation (or safe-harbor appraisal within the last 12 months) helps you set strike prices at fair market value and reduces 409A exposure. Material events, new term sheets, a sizable revenue inflection, and secondary sales can invalidate an otherwise timely valuation. Don’t wait until December 30th to ask for a refresh.
Operational hygiene:
- Align board approvals, grant dates, and 409A effective dates.
- For ISOs/NSOs, confirm you’re not inadvertently issuing discounted options.
- If you’re extending exercise windows, check for potential 409A implications.
Plain-English rule of thumb: if something happened this fall that would make a reasonable buyer pay more for your common stock, talk to us about a new 409A before year-end.
Prepare for state & local taxes
Multi-state sales tax & SaaS. Many states tax SaaS; some don’t. Separately, economic nexus thresholds continue to evolve, and several states have eliminated the 200-transaction test, focusing on revenue only. Review where your customers are, whether you’ve crossed each state’s thresholds, and whether you should register/collect. This is a common “gotcha” for growing SaaS.
Paired with sales tax, remote workers and significant operations across different States may also subject your company to Corporate Income and Franchise Tax. For instance, in the State of California, paying someone more than $60,000 (inflation-adjusted) would trigger having your company register and file franchise taxes ($800 minimum tax) even if your company has no other connection to the state.
2025 year-end checklist for founders & CFOs
- Model Q4 taxes now. Update your forecast with 174A expensing and bonus depreciation to avoid overpaying estimates.
- Lock in asset purchases and place them in service by 12/31, where it makes business sense. Check contract dates.
- R&D workflow: finalize project lists, substantiate time and experiments, coordinate 174A expensing with the R&D credit.
- 409A readiness: confirm your valuation is current post-financing or other material events; schedule a refresh if needed.
- State strategy: Review economic nexus and SaaS taxability by state. What States are your customers in? Where are your employees located? Do you have servers, or other equipment, or office space in multiple locations? These are all important factors to determine your State and local tax strategy.
Let’s talk about your plan
Every cap table and product roadmap is different. The goal is not to “pay zero tax,” it’s to align taxes with your strategy so you can hire, ship, and fundraise with confidence.
If you want a second set of eyes on your year-end playbook, or a hands-on partner to implement it – ShayCPA is here to help.
Get in touch with us to align your tax strategy with your growth goals and close the year strong.
Disclaimer:
The content provided on this blog is for general informational purposes only and does not constitute professional accounting, tax, or legal advice. Reading or accessing this material does not create a CPA-client relationship, nor should it be construed as a substitute for individualized guidance from a qualified professional. While we strive for accuracy, Shay CPA PC makes no warranties—express or implied—about the completeness, reliability, or timeliness of the information, and we expressly disclaim liability for any errors or omissions. You should not act or refrain from acting based on any blog content without seeking the advice of a qualified CPA or other professional who can address your specific circumstances. Links to external resources are provided for convenience only and do not imply endorsement. Shay CPA PC is under no obligation to update this content and disclaims responsibility for decisions made in reliance on it.