The Extra Job You Did Not Get Paid For
Most trades owners do not lose money on the jobs they win. They lose it after tracking is done, or more often, when it was never tracked at all. A rough here, an uncleared invoice there, one old job with costs still rattling around a basement folder, and suddenly the bank account does not match the work you actually did.
If that feels familiar, you are not bad with money. You are just too busy running a trade to keep up with the books. The fix is not harder work. It is putting the quiet, expensive mistakes to a stop. Here are the seven we see most in construction, electrical, plumbing, HVAC, landscaping, and renovation companies across BC, and the simple habit that kills each one.
1. Flying blind on job costs
When you price a job by feel, one bad quote can wipe out the profit from two good ones. Materials drift, change orders slip through, hours run long, and nobody catches it until the job swallows more than it made.
The fix: track cost per job, not just revenue. Know what each crew, each load of materials, and each revision actually cost. The moment you can answer "did this job make money?" in minutes instead of at year end, pricing decisions get easy.
2. Mixing personal and business spending
A coffee here, a truck of gas there, a personal bill paid from the company account. It does not wreck you in a month. But once a year, it leaves a mess your accountant can only untangle letter by letter. Commingling hides your real profit and makes a clean audit a headache.
The fix: one business account and one personal account, full stop. Every business expense goes through the business book. It is the simplest habit on this list, and it makes everything else easier.
3. Never reconciling the bank
A reconciled account means the bank says you have X, your books say you have X, and you know where the difference is. Most owners skip this because it feels like busywork. Then they cannot tell you where the cash actually is, or what one large customer still owes.
The fix: reconcile every single month, without exception. It takes an hour when it is done on schedule, and it is the single highest-value thing a bookkeeping pro does for you.
4. Guessing at GST and PST
Tax filings are not a quarterly surprise. If you have never had someone lay out exactly what is due, when, and how it is remitted, you are one filing away from interest, penalties, and a very anxious phone call.
The fix: get a repeatable filing routine. GST and PST on your sales, input tax credits on your purchases, remittances on time. When the books are kept current, filing stops being a crisis and becomes a 20-minute task you never personally dread.
5. Payroll and remittances done on vibes
Payroll is where trades find the CRA and WSBC are not something you play with. Miss a source deduction, mismanage a contractor, and you owe interest, penalties, and a long explanation. Getting it slightly wrong costs more than getting it professionally right.
The fix: a payroll routine that runs itself, with remittances on a calendar and contractor status handled correctly from day one. No surprises at the end of the quarter.
6. Writing off the same job twice, or never
Without a clean ledger, invoices slip through the cracks. Some go billed twice, most go never, and the ones that slip out are pure profit left on the table. Owners are routinely shocked at how much uncollected and unlogged work exists in their own business.
The fix: everything invoiced, nothing forgotten, and collections followed up on a beat. When the books are current, you always know who owes you money and who is floating the operation.
7. Turning profit into busyness
The real cost is the one you cannot see. When your numbers are a mess, you cannot tell if you are profitable, which work you should take more of, or when to hire. Busy trades are not always profitable trades, and busy owners rarely realize it in time.
The fix: a monthly report that says plainly, "here is your profit, here is your cash, here is where it went." You do not make decisions on the run to the next job; you make them on real numbers, once a month, with time to think.
The simple habit that fixes all seven
Every one of these boils down to the same move: keep the books current, and review them on a schedule. A job-costing routine, a reconciled account, filing GST and PST and WSBC remittances on time, payroll handled, and a monthly report that tells you the truth. Do that and each mistake above stops being your side work.
That is what Cornerstone Compliance does for trades and home services businesses across BC. Foundation gets your books accurate, reconciled, and your filings handled. Growth adds monthly management reports and quarterly time with a bookkeeper who knows your numbers. Strategic puts a financial advisor in the room with you, forecasting cash and holding you accountable to the plan.
No jargon, no surprise invoices, and a bookkeeper in your corner who knows exactly where your profit is going.
If you can count the jobs but not your profit, book a free call. We will show you which of these seven mistakes are quietly costing your business — and the fix you can start this week.