How much does a bookkeeper cost in Ontario?

By Maaz · Evolve Financial · June 24, 2026 · 5 min read

Here's the straight answer most Ontario business owners are looking for: ongoing bookkeeping typically runs $200 to $800+ per month for a small business, or roughly $40 to $80 an hour if billed hourly. A one-time catch-up or cleanup is usually priced separately. Where you land depends on how many transactions you have, how many accounts, and whether you need payroll and HST handled too.

But price without context is useless — so let's break down what drives the number, and what you should actually expect to get for it.

What bookkeepers charge in Ontario: hourly, monthly and flat-fee

There are three common pricing models you'll run into across Ontario, from Ottawa to Toronto:

• Hourly — roughly $40–$80 per hour. Fine for very light needs, but unpredictable: a messy month costs you more.
• Monthly flat fee — usually $200–$800+ depending on volume and services. The most popular option because you know your cost up front.
• One-time cleanup / catch-up — priced as a project, based on how many months or years are behind.

At Evolve we price on a flat monthly fee for exactly this reason: no surprises, no clock-watching, and your cost is the same whether your month was tidy or chaotic.

What actually drives the price

Two businesses in the same Ontario town can pay very different fees. The factors that move the number are:

• Transaction volume — 50 transactions a month is a different job from 500.
• Number of accounts — each bank and credit card account adds reconciliation work.
• Payroll — running pay and remittances adds scope.
• HST — collecting, tracking and filing GST/HST.
• Condition of your books — if you're behind, a cleanup comes first.

What you actually get for the money

Good bookkeeping isn't just "someone enters my receipts." For a monthly fee you should expect reconciled, review-ready books every month; clear financial reports you can actually use; HST and payroll handled on time; and a real person who answers when you have a question. The best bookkeepers also flag problems early — a slipping margin, a tax bill building up — before they become expensive.

Hourly vs flat monthly — which is better?

For most small businesses in Ontario, flat monthly wins. Hourly billing quietly punishes you for messy months and makes your cost impossible to plan around. A flat fee aligns everyone's incentives: your bookkeeper wants efficient, clean books just as much as you do, and you can budget the exact same number every month.

Is a bookkeeper actually worth it?

Think about the cost of not having one: missed deductions at tax time, late-filing penalties and interest, hours of your own time lost to admin, and decisions made on numbers you don't trust. For most owners, professional bookkeeping pays for itself several times over. If you want a clear quote for your situation, see our bookkeeping service or just book a free call — we'll give you an honest flat-fee number.

Frequently asked questions

Do I really need a bookkeeper as a small business owner in Ontario?

If your books take you hours each month, you dread tax season, or you're not sure what you're really making, then yes. A bookkeeper frees up your time, keeps you compliant with the CRA, and gives you numbers you can actually make decisions on. Most Ontario owners find the time and stress saved is worth more than the fee.

How much does a bookkeeper cost per month in Ontario?

For a typical small business, expect roughly $200–$800+ per month on a flat fee, depending on your transaction volume and whether you need payroll and HST handled. Hourly work tends to run $40–$80 an hour. A one-time cleanup of behind books is usually quoted separately as a project.

What does it cost me to NOT have a bookkeeper?

Usually more than the fee. Disorganised books lead to missed deductions, late HST or payroll remittances (which carry CRA penalties and interest), and rushed, error-prone tax filings. Add the hours of your own time spent on admin, and "saving" on bookkeeping often turns out to be the more expensive choice.