There’s one bookkeeping mistake I see every single spring.
It doesn’t matter the trade. Landscapers in their first big mowing month, electricians wrapping up an HVAC install, plumbers running a busy week of service calls. The mistake looks the same.
A bunch of money comes in. The owner’s busy. They deposit it. They don’t categorize it.
By the time the books catch up in fall, that deposit is sitting in their accounting software as one big number called “Income.” Or worse, “Bank Deposit.” And nobody can tell you what it was actually for.
Here’s why it matters.
That single deposit usually has three or four different things inside it. A customer payment for a finished job. A retainer for an upcoming one. Reimbursed expenses you advanced on materials. A check from a different customer for a totally separate project.
When all of that lands as “Income,” your books can’t tell you anything useful. Not job profitability, not what’s still owed to you, not what’s coming back as a reimbursement vs. what’s actually new revenue.
By October, when your accountant tries to clean it up, you can’t remember what came from where. Your bank app shows a date and a number. That’s all.
The fix in May is small. The fix in October isn’t.
How it happens
The mistake happens because spring is the busy time. The work doubles. The phone keeps ringing. The deposit slip looks like a quick task to handle later.
Then the season runs hot through October. Books slip further. By the time you’re doing year-end, the categorization has compounded into a mess.
It’s not a moral failing. It’s a workflow problem. The fix is a workflow fix.
How to fix it now
Three steps. Today.
First. Open whatever bookkeeping software you use. Pull this month’s deposits. Look at each one. If you can answer “what was this for, and from which customer,” in one sentence, the deposit is already categorized correctly. If you can’t, that’s the problem.
Second. Go back to your bank statement and your invoices. Match the deposit to the source. Customer name, project, invoice number if you’ve got one. Tag it in your software.
Third. Set up a habit. Every time a deposit clears, take 60 seconds and tag it. Not later. Not at the end of the week. The same day.
If your software is set up wrong and won’t let you split a deposit into its parts, that’s the deeper signal. Most modern accounting software handles this fine, but the configuration has to be right.
What to do if your books are already a mess
If you’re reading this in May and the deposits going back to January are still uncategorized, that’s actually the best time to find out.
In May, the work to clean up four months is a couple hours. In October, the work to clean up nine months is a couple weeks. By February of next year, when the tax pro is asking you to explain December’s deposits, you’ll wish you had this afternoon back.
That’s the kind of catch-up bookkeeping we do for trades businesses across Montana and Wyoming. Fixed-fee, no surprise invoices, and we set the system up so this stops happening to you next spring.
If you’d like a free conversation about where your books actually stand, call (406) 609-4567 or book online at abundantskiestax.com/contact.
The fix is small in May.