If the first time you’re thinking about your tax bill is when your return is being prepared, you’re already late.

A lot of shop owners treat taxes as something that happens once a year. They send everything to their accountant, wait for the return, and find out how much they owe.

Sometimes that number is manageable. Sometimes it’s a very expensive surprise.

The better approach is to figure out where you’re heading while there’s still time to do something about it.

Tax Preparation and Tax Planning Are Different

Tax preparation looks backward.

By the time your accountant prepares your return, the year is over. Your income has been earned, your expenses have been paid, and most of the decisions that could have changed your tax situation have already been made.

Tax planning looks forward.

It’s about using your current financials to estimate where you’ll finish the year, what that could mean for your taxes, and what decisions may need to happen before December 31.

You need both, but only one gives you time to prepare for what’s coming.

Start With a Simple Estimate

You don’t need to wait until year-end to get a reasonable idea of where your business is heading.

Start with your year-to-date net income and annualize it.

If you’re looking at nine months of financials, for example, you can use those results to estimate what a full twelve months might look like. Then ask whether that estimate makes sense based on what you know about the rest of the year.

Was there an unusually profitable month? Are you expecting a large expense? Is business seasonal?

The goal isn’t to predict your final tax return down to the dollar. It’s to get close enough that you can plan your cash and identify anything that needs attention.

Don’t Forget What’s Happening Outside the Shop

Your business income is only part of your tax picture.

Changes in your personal life can affect the final number too. Child-related tax credits can change as income increases. Health insurance purchased through the ACA marketplace can create an unexpected repayment if your actual income ends up higher than the estimate used to calculate your subsidy.

That’s why looking only at the shop’s profit can give you an incomplete answer.

As a rough starting point, setting aside around 25% of projected income may help you estimate what could be needed, but your actual situation can be different. That’s where working through the numbers with your accountant becomes important.

An Extension Isn’t a Tax Strategy

Filing an extension gives you more time to file your return. It doesn’t give you more time to pay the tax you owe.

It also shouldn’t become the default answer every year without a good reason.

Extending a return because you genuinely need additional information is one thing. Automatically extending because someone claims it reduces your chances of an audit is another.

Good tax planning should give you an idea of your liability well before the filing deadline.

The goal isn’t to predict your taxes perfectly months in advance. It’s to eliminate the big surprise.

You already forecast sales, payroll, parts, and other expenses to run your shop. Your tax bill deserves the same attention.