A point that surprises a lot of early-stage founders: you can use the R&D tax credit before you are profitable. Qualified small businesses can apply up to $500,000 a year in credits against payroll taxes, not only income taxes.
The eligibility is broader than the name suggests. It covers developing or improving products, processes, or software through experimentation, which describes most engineering work at a startup. Even so, fewer than 30 percent of eligible companies claim it. The federal credit generates roughly 6 to 10 cents per dollar of qualified research spend, and 37 states stack their own on top.
It mostly comes down to knowing the rules and tracking the right expenses through the year.