R&D Tax Credit for Software Startups

The IRS four-part test looks for permitted purpose, technological uncertainty, process of experimentation, and reliance on hard sciences or engineering principles. Building a novel API gateway with uncertain performance characteristics might qualify. Routine UI tweaks on a mature product often won't.

Qualified research expenses (QREs) typically include taxable wages for engineers doing qualifying work, supplies, and a portion of contract research. Founders' wages can qualify if they're doing hands-on technical experimentation—not just management.

Form 6765 is filed with your annual return (1120 for C corps). You calculate the credit using the regular method or alternative simplified credit (ASC)—your advisor picks based on your history and expense mix.

QSBs with gross receipts under the threshold can elect to apply the credit against employer Social Security tax on Form 8974, spread over subsequent quarters. Timing and eligibility rules change—verify current limits and IRS guidance with your CPA.

Keep project notes, tickets, commit histories, and design docs showing technical uncertainty and iteration. Time tracking by project helps allocate wages—perfect timesheets aren't required, but reasonable allocation is.

If you're claiming founder or contractor costs, the narrative matters. "Built auth system v2—evaluated three session architectures" beats "general development."

California, Arizona, and several other states offer R&D credits with their own rules and caps. Some states require you to have apportioned income; others give refundable credits in limited cases.

Federal and state credits interact with your overall tax posture. Don't assume state conformity—California famously decouples from some federal R&D rules.

Many startups run their first R&D analysis at year-end once engineering payroll is meaningful—often $500K+ in qualifying wages, though smaller amounts can still justify filing depending on costs.

Specialized R&D credit firms and startup CPAs often bundle the study with tax prep. Fees are usually contingent or fixed relative to credit size—shop around and check references.