Taxes you should be planning, not surviving
The owners who get blindsided by tax bills are the ones treating taxes like an April problem.
Quarterly estimates, not annual surprises
The IRS expects estimated payments four times a year. Most owners who get hit with penalties just didn't know, and didn't ask. A 30-minute call with a CPA in January saves most of these.
Entity structure matters more than people think
Sole prop, LLC, S-corp, the right answer depends on revenue and profit. Once net is consistently above ~$60-80k, S-corp election usually saves real money. Below that, the paperwork outweighs the savings.
Set the money aside, in a separate account
Tax money in the operating account gets spent. Move 25-30% of profit to a tax savings account the same week the profit lands. The CPA's bill in April is half as scary.
Take your version of this question further
This is one operator-tested angle on the question. Your shop, your size, your trade, and your team change the answer. Ask your specific version inside Ask a Shop Owner to get a response grounded in how owners like you actually handled it.