Tax Intelligence Hub · Updated Feb 2026

Tax code, decoded.

Hover a category node to explore. Each cluster surfaces the analysis your stage demands.

R&DR&D Tax Credits
R&D Tax Credits

OBBBA Restores Immediate R&D Expensing — What It Means for Your Burn Rate

6 min read

The Payroll Tax Offset: Converting Credits Into Quarterly Cash

5 min read

New Form 6765 Documentation Requirements for 2024 Filers

4 min read
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StartupStartup Tax Strategy
Startup Tax Strategy

Non-Dilutive Capital Hidden in Your Engineering Payroll

5 min read

Series A Readiness: The Tax Checklist Investors Actually Check

7 min read

Cap Table Cleanup Before the Term Sheet Arrives

5 min read
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NexusMulti-State Compliance
Multi-State Compliance

Illinois Drops 200-Transaction Rule: What Remote Sellers Must Do Now

4 min read

Economic Nexus Thresholds: All 45 States, Updated July 2025

8 min read

How to Track Multi-State Exposure Before It Becomes Liability

6 min read
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M&AM&A Due Diligence
M&A Due Diligence

Sales Tax: The Most Overlooked M&A Liability

6 min read

Successor Liability in Asset Deals: Protecting the Buyer

5 min read

Tax Attributes and Ownership Changes: Section 382 Explained

7 min read
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QuarterlyQuarterly Planning
Quarterly Planning

Q3 2026 Estimated Tax Calendar: Key Deadlines for Founders

3 min read

GAAP vs. Cash: Reconciling ARR Recognition for SaaS CFOs

6 min read

Mid-Year Tax Review: The Six Questions to Ask Your Accountant

5 min read
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R&D Tax Credits

The OBBBA permanently changed the calculus. Immediate expensing is back, the payroll offset is live, and the retroactive window closes July 6, 2026.

Legislative UpdateFeb 12, 2026

OBBBA Restores Immediate R&D Expensing — What It Means for Your Burn Rate

Signed July 4, 2025, the One Big Beautiful Bill Act permanently ends the five-year amortization regime. Engineering salaries, cloud infrastructure, and contractor costs are now 100% deductible in the year incurred.

6 min readRead →
Cash StrategyFeb 5, 2026

The Payroll Tax Offset: Converting R&D Credits Into Quarterly Cash

For startups with zero income tax liability, the $500K annual payroll offset transforms the R&D credit from a future benefit into a real-time reduction of employer-side payroll taxes — each quarter.

5 min readRead →
ComplianceJan 28, 2026

New Form 6765 Documentation Requirements for 2024 Filers

Businesses claiming more than $1.5M in QREs now face project-level documentation under the revised Form 6765. Sprint notes, Git histories, and Jira tickets are no longer optional.

4 min readRead →
$500K
Annual payroll offset

Most early-stage startups see a net benefit equal to 6–10% of qualified R&D spend. The retroactive amendment window for 2022–2024 returns closes July 6, 2026 — companies with average gross receipts under $31M should act now.

Retroactive deadline: July 6, 2026
📋
Get our R&D Credit Qualification Checklist — 12 questions that take 10 minutes.

Startup Tax Strategy

From pre-revenue payroll offsets to Series A financial hygiene. The tax decisions founders make in years one through three compound for a decade.

Non-Dilutive CapitalFeb 18, 2026

Non-Dilutive Capital Hidden in Your Engineering Payroll

Most founders don't realize their existing engineering spend is generating a quarterly refund. Pre-revenue companies can offset payroll taxes the quarter after claiming R&D credits — no income tax liability required.

5 min readRead →
FundraisingFeb 10, 2026

Series A Readiness: The Tax Checklist Investors Actually Check

Median Series A in 2025 is $16.6M at $20M–$60M pre-money. Investors require GAAP-compliant accounting, properly recognized revenue, and all tax returns filed on time. Red flags kill deals faster than declining growth.

7 min readRead →
Cap TableJan 22, 2026

Cap Table Cleanup Before the Term Sheet Arrives

A messy cap table is one of the top five deal-killers in Series A due diligence. This is what needs to be clean before the conversation starts: 83(b) elections, option pool sizing, and convertible note conversion mechanics.

5 min readRead →
30%
Equity dilution (avg Series A)

Founders who optimize tax structure before fundraising negotiate from a cleaner position. GAAP-compliant financials, accurate ARR recognition, and zero outstanding tax issues are table stakes — not differentiators — for institutional investors in 2026.

Series A diligence starts earlier than you think
📋
Raising soon? Get our Series A Tax Readiness Scorecard.

Multi-State Compliance

Post-Wayfair, economic nexus is the default state. Fifteen states have already dropped the transaction threshold. Illinois joined January 1, 2026.

Regulatory AlertJan 3, 2026

Illinois Drops 200-Transaction Rule: What Remote Sellers Must Do Now

Effective January 1, 2026, Illinois remote sellers now establish economic nexus solely by crossing $100,000 in gross receipts. The transaction-count threshold is gone. If you've been relying on staying under 200 transactions, your exposure changed on New Year's Day.

4 min readRead →
State-by-StateJul 15, 2025

Economic Nexus Thresholds: All 45 States, Updated July 2025

As of July 2025, 15 states have eliminated the 200-transaction threshold for remote sellers. This tracker covers every state's current dollar threshold, transaction threshold (where applicable), and effective date of most recent change.

8 min readRead →
OperationalDec 18, 2025

How to Track Multi-State Exposure Before It Becomes Liability

Best practice: track sales monthly by state, separate marketplace sales from direct sales, and set alerts at 75–90% of thresholds. States now use data analytics to identify violations faster than most compliance teams can react.

6 min readRead →
+30%
Average penalty on uncollected tax

Failure to collect sales tax means paying past-due amounts out of pocket. Interest and penalties average 30% of the original amount owed — and the statute of limitations never tolls when a taxpayer fails to file required returns.

State enforcement is accelerating via automation
📋
Running multi-state? Get our Nexus Exposure Checklist.

M&A Due Diligence

Tax exposure surfaces in every deal. Most of it is preventable. Sales tax remains the most frequent source of material SALT liability discovered during diligence.

Deal RiskFeb 14, 2026

Sales Tax: The Most Overlooked M&A Liability

A small monthly misclassification — say, failure to tax a SaaS subscription in Connecticut — compounds over years into a six-figure liability with interest. Cloud service taxability (SaaS, PaaS, IaaS) varies dramatically by state and is almost always underestimated.

6 min readRead →
Buyer ProtectionFeb 2, 2026

Successor Liability in Asset Deals: Protecting the Buyer

Most states enforce successor liability standards that require purchasers to pay pre-transaction taxes owed by the target — even in asset transactions. This is not theoretical; it surfaces in diligence constantly.

5 min readRead →
Tax AttributesJan 15, 2026

Section 382 and Ownership Changes: What Happens to Your NOLs

Tax loss carryforwards, credits, and deferred tax assets may not survive ownership changes intact. Section 382 limitations can dramatically reduce the value of tax attributes post-transaction — a common surprise in buyer investment models.

7 min readRead →
1–3 mo
Typical diligence window

Tax due diligence teams collect three years of returns, sales and use tax filings, payroll reports, property tax filings, and income tax provisions. Sellers who address issues proactively before diligence begins negotiate from a fundamentally stronger position.

Seller preparation reduces escrow holdbacks
📋
In a deal process? Get our M&A Tax Diligence Prep Guide.

Quarterly Planning

The calendar is the strategy. Estimated payments, GAAP reconciliation, and mid-year reviews that keep your numbers honest and your CFO credible.

CalendarFeb 20, 2026

Q3 2026 Estimated Tax Calendar: Key Deadlines for Founders

Q3 2026 estimated payment due September 15. Extension filers: October 15 for 2025 returns. R&D credit payroll offset claims flow through Form 941 — the quarterly payroll filing that most founders delegate without review.

3 min readRead →
SaaS FinanceFeb 8, 2026

GAAP vs. Cash: Reconciling ARR Recognition for SaaS CFOs

Investors read ARR. Auditors read GAAP revenue. The gap between them — deferred revenue, contract modifications, variable consideration — is where most Series A financial restatements originate. Here's the reconciliation framework.

6 min readRead →
Review FrameworkJan 30, 2026

Mid-Year Tax Review: The Six Questions to Ask Your Accountant

Most founders talk to their accountant once a year — at filing. The six questions in this framework surface planning opportunities that only exist mid-year: Roth conversion windows, loss harvesting timing, entity structure changes, and estimated payment adjustments.

5 min readRead →
Sep 15
Q3 2026 estimated due

Founders who skip mid-year reviews consistently overpay estimated taxes or face underpayment penalties. The planning window for most income-timing decisions closes December 31 — by the time you file in April, the opportunity is gone.

Q3 payment due September 15, 2026
📋
Get our Quarterly Tax Planning Template — updated for 2026.
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