Security company bookkeeping: every guard hour scheduled, paid, billed, and costed

Revenue is a portfolio of site contracts, not one sales line

Each site is its own small business: contracted coverage hours at a negotiated bill rate, plus the extras — statutory-holiday premiums, short-notice fills, special events, mobile patrol stops — that the contract prices separately. We structure revenue by site and by customer, so the ledger answers the questions a single sales line cannot: which contracts are still worth their rate, which have drifted below cost since the last wage increase, and what actually walks out the door when a property manager leaves. Contract escalator dates live in the same file, because an escalator nobody invokes is a permanent price cut — and after a minimum-wage increase, it can be the difference between a site that earns and a site you subsidize.

Schedule, payroll, invoice: the weekly three-way match

The scheduling platform — TrackTik, Silvertrac, Connecteam, or whatever runs your roster — knows what was supposed to happen; payroll knows what you paid for; invoices know what you charged for. Guard companies leak margin in the gaps between the three, and the leak is invisible on a P&L that only shows totals. We reconcile all three weekly, while shifts are still provable.

The same package doubles as billing backup. Invoices that go out with the site's verified hours report attached get disputed less and paid sooner — and in a business this thin on margin, receivable days are a profit line.

What a guard hour actually costs

The pay rate is where the cost starts, not where it ends. A properly costed guard hour carries vacation pay, public holiday pay, the employer share of CPP and EI, Ontario Employer Health Tax above the exemption, WSIB premiums, plus the costs the industry adds on top — PSISA licensing, mandatory training hours, uniforms, and the supervision and mobile support that keep sites covered. Only with that loaded rate does margin by site mean anything.

One trap is specific to multi-site operations: overtime follows the guard, not the site. Under Ontario's ESA, overtime generally starts after 44 hours in a week across all assignments, so a guard covering three sites can push a week into overtime that no single site's schedule predicted. We cost that overtime back to the sites that caused it — otherwise your most short-staffed contracts look artificially profitable.

Turnover is the industry's other hidden cost line. Every guard who leaves takes licensing, training, and uniform spend with them, so we book onboarding costs to their own account instead of letting them dissolve into wages — a rising number there explains a falling site margin faster than any rate analysis will.

Payroll-heavy cash, and the Brampton reality

Guards are paid weekly or biweekly; property managers and corporate clients pay on 30- to 60-day terms — so a growing guard company funds the gap from its own cash while source deductions come due on CRA's calendar, not the client's. Those withheld amounts are trust funds with personal exposure for directors, so the books set them aside at every payroll run. HST applies to security services, invoiced on the full contract billing and reconciled to the GST34 each period.

The operating stack is simple and stays that way: scheduling exports feeding a payroll engine like Wagepoint, with QuickBooks Online carrying site-level revenue and costed hours, and Dext catching the fuel, uniform, and equipment receipts. We run this for guard firms across Brampton and the GTA, where the industry is dense and contracts turn over fast. Most of the work is proudly domestic; where a US-headquartered client or national account raises billing and tax questions, our cross-border tax guide for security companies covers that layer, and our bookkeeping services page shows how a fixed-fee monthly engagement is structured.