What I Found When I Cleaned Up a Painting Contractor's Books

A few months back I was cleaning up the books for a painting contractor — I'll call him Marcus — who'd been in business about six years. Solid guy. Good reputation in his area, steady work, a small crew of four guys he'd built up over time. He came to me because his accountant told him he owed more in taxes than expected and he wanted to figure out why.

When I got into his QuickBooks file, the first thing I noticed was that it was a mess. Not unusual. A lot of contractors do their own bookkeeping the way most of us cook — they get food on the table, but the kitchen is a disaster. Marcus had been coding almost everything to one or two categories. Materials, labor, and then a big catch-all called 'Supplies' that had everything from painter's tape to truck repairs to subcontractor payments. It was all just piled in there.

The subcontractor payments were the big thing. Marcus had paid out somewhere around $40,000 to subs over the year, but none of it was properly categorized as subcontractor labor. It was buried inside that supplies account. That matters because when you're looking at your job costs, you want to actually see what you're spending on people versus materials. He had no idea what his real labor costs were.

Once we separated everything out and got it into the right buckets, something interesting happened. His gross profit margin looked different than he expected — in a good way. His materials costs were reasonable. His labor costs were actually in line with where a painting business in his area should be. The problem wasn't that he was spending too much. The problem was that he couldn't see any of it clearly, so he had no real information to make decisions with.

The tax situation was a separate issue, and honestly a simpler one to explain. He had a few legitimate expenses he'd just never tracked — tool replacements, a portion of his phone bill, mileage he was driving to job sites every day for years. None of it documented. None of it deducted. That adds up faster than most people realize, and it was a big part of why his tax bill felt so high.

What I try to explain to clients like Marcus is that bookkeeping isn't really about compliance. It's about knowing what's going on in your business. If your books are just a pile of transactions with vague labels, you can't actually use that information. You don't know which jobs are worth taking and which aren't. You don't know if hiring another guy would help or hurt. You're just guessing.

Marcus called me a few weeks after we finished the cleanup. He said he'd just looked at his numbers for the first time and actually understood what he was looking at. That's a good call to get. It doesn't happen every time, but when it does, it's a reminder of why this work matters.

If your books feel like a mess right now, or you're not sure what your numbers are actually telling you, that's exactly the kind of thing we work on at Blackfin. We work specifically with service businesses, and we respond the same day. If you want to talk through what's going on, feel free to reach out.