Startups have to face that five year window every time they start up.
Each and every startup will have a year 0 where they're spending more than they earn, and under the new Section 174 they will only get to deduct 10% of their employee's salaries that year. In year two they get to deduct 20% of year 1's salaries and 10% of year 2's salaries, which is still 30% of what the established players will be able to deduct. By year 4, if they make it that far (which most startups don't) they'll finally be at 90% of a full deduction.
Add to that the fact that startups also by definition have a much higher rate of growth than established companies and you'll find that a startup almost definitionally will be paying substantially more in taxes as long as it remains a startup, because they only get to deduct an average of the last 5 years of expenses from this year's revenue in order to calculate this year's profit. That's fine when your last five years are more or less similar to this one, but it's terrible when you've been growing.
The net effect of this change can only be to disincentive startups and cement big, slow established players.
Increasing taxes does not always increase tax revenue. It’s easy to do enough damage to the economy that total tax revenues fall. Past that point is easy for the economy and government revenue to fall into a dwindling spiral.
Not if it limits growth to a commensurate extent (or more)
A big part of why America is as rich as it is in 2025 is Big Tech. If laws and regulations had prevented that industry from taking off by stifling the now-giants back when they were starting up, you may have been more equal today (you’d have fewer billionaires), but there would also have been a lot less wealth to go around, even for the working class
Each and every startup will have a year 0 where they're spending more than they earn, and under the new Section 174 they will only get to deduct 10% of their employee's salaries that year. In year two they get to deduct 20% of year 1's salaries and 10% of year 2's salaries, which is still 30% of what the established players will be able to deduct. By year 4, if they make it that far (which most startups don't) they'll finally be at 90% of a full deduction.
Add to that the fact that startups also by definition have a much higher rate of growth than established companies and you'll find that a startup almost definitionally will be paying substantially more in taxes as long as it remains a startup, because they only get to deduct an average of the last 5 years of expenses from this year's revenue in order to calculate this year's profit. That's fine when your last five years are more or less similar to this one, but it's terrible when you've been growing.
The net effect of this change can only be to disincentive startups and cement big, slow established players.