5 Bookkeeping Mistakes Every Solo Corp Owner Makes

Running a one-person corporation means you're the CEO, the employee, and the bookkeeper. The first two are why you incorporated. The third is the thing you keep putting off.

Here are five mistakes we see over and over, and how to avoid them.

1. The Shoebox Method

You know the pattern. Receipts go into a drawer, a folder on your desktop, or (let's be honest) the trash. At year-end, you spend a weekend trying to reconstruct six months of expenses from bank statements and memory.

The fix: Record transactions as they happen. Even a 30-second entry with just the vendor and amount is infinitely better than nothing. Categorize later.

2. Mixing Personal and Business Accounts

Using your personal credit card for business expenses, or your business card for groceries, creates a nightmare at tax time. Every mixed transaction needs to be identified, split, and justified.

The fix: Get a dedicated business bank account and credit card. Even if it costs a small monthly fee, the time saved at year-end pays for itself many times over.

3. Forgetting to Track Cash Expenses

That parking meter. The coffee with a client. The office supplies from the dollar store. Small cash expenses don't show up on bank statements, so they disappear from your books.

The fix: Log cash expenses immediately. Pull out your phone, type the amount and vendor, done. If it's a business expense, it should be in your books.

4. Not Separating GST/HST from Expenses

When you buy something for $105, the actual expense is $100 and the $5 is GST you can claim back as an ITC (Input Tax Credit). If you record the full $105 as an expense, you're overstating your costs and missing your tax credit.

The fix: Always break out the tax component. Your bookkeeping tool should handle this automatically based on your province.

5. Waiting Until Tax Season

The biggest mistake isn't any single entry. It's the habit of waiting until March to do all your bookkeeping for the previous year. By then, you've forgotten context, lost receipts, and the task feels overwhelming.

The fix: Bookkeeping is a weekly habit, not an annual event. Even 10 minutes per week keeps your books current and makes tax season painless.

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The Bottom Line

None of these mistakes are complicated. They're all about friction: bookkeeping feels like a chore, so you put it off, and small problems compound into big ones.

The solution isn't willpower. It's removing the friction. Log things quickly. Let the tool handle the tax math. Sort it out when you have time.

That's exactly what ledg is built for.