The global R&D tax incentive platform,
built by R&D tax experts.
Built on 20+ years of hands-on R&D tax expertise, Certainti brings the entire claim lifecycle into one intelligent platform — identifying qualifying activity, quantifying eligible spend and building the evidence behind stronger, audit-ready claims. The result: a lower effective tax rate and more working capital, every year.
Capture more. Do less. Defend better.
R&D tax expertise. Proven at scale.
Trusted Partners
R&D tax claims shouldn’t be this difficult.
Your teams are already innovating. The challenge is identifying it, quantifying it, and producing the evidence to prove it. Traditional R&D tax processes are retrospective, fragmented, and dependent on people reconstructing technical work months after it happened.
Credits get missed.
Qualifying activity goes unidentified or underclaimed, because the right information was never captured in the first place.
Teams lose time.
Engineers, technical leads and finance spend hours on questionnaires, document hunts and reconstructing projects they finished a year ago.
Evidence weakens.
The longer you wait to document R&D activity, the harder it becomes to build a complete technical record.
Risk increases.
As tax authorities demand greater substantiation, defensibility depends increasingly on the quality and traceability of your evidence.
We built Certainti because we spent twenty years watching this happen.
Who We Are
We didn't build an AI company and hire tax people.
We're R&D tax experts who built an AI.
Certainti comes out of two decades and 5,000+ claims at ResDev Tax Consultants - former tax-authority reviewers, scientists and engineers who know where claims are won and where they fall apart.
What Clients Say
Services & Solutions
From first claim to final defense, we handle the heavy lifting.
Our R&D tax experts and AI-powered platform work together to identify every eligible dollar, cut the documentation burden, and keep your claims audit-ready in every jurisdiction.
Meet Think R&D.
Most R&D credit work happens in a scramble at year-end. Think R&D runs underneath your business every day — ingesting project, timesheet, and payroll data as it's created, scoring R&D eligibility in real time, and building your technical narrative before your fiscal year even closes.
Geographies
One platform. Local rules. Global visibility.
R&D incentives exist across most of the world's innovation economies, but the rules, rates and evidence requirements change at every border. Certainti captures the work once and applies the right regime to it - so a business operating in four countries runs one process, not four.
Ready to find out what you're owed?
Most companies are leaving credit on the table. A brief assessment with us will tell you how much - and what it would take to get it back.