How Much Does a Bookkeeper Cost in Montana?
The honest answer: most Montana small businesses pay between $300 and $900 per month for professional bookkeeping in 2026. The wide range reflects real differences — a one-person contractor with two accounts is not the same job as a 20-employee construction company with inventory, job costing, and three loan accounts. Here is how bookkeeping is actually priced, what drives your quote, and how to avoid overpaying.
Three ways bookkeepers price their work
Hourly. Historically the default — and the worst deal for the client. Hourly billing punishes efficiency, penalizes questions, and produces surprise invoices every month. Typical rates in Montana run $50–$125/hour for a solo bookkeeper and $125–$250/hour for a firm.
Fixed monthly. The modern standard. You get a quote based on your transaction volume, number of accounts, and complexity, and you pay the same amount every month. This is what Marlow Accounting uses, and it is what most quality firms have moved to.
Per-transaction or tiered. Some online bookkeeping mills price by transaction count or bank account count. This can work for very small businesses, but it usually breaks down as soon as your situation is anything other than average.
What actually drives the price
Transaction volume — the single biggest driver. A business running 100 transactions a month is a much smaller job than one running 1,000. Number of financial accounts — every bank, credit card, loan, and merchant account has to be reconciled. Payroll — do you have employees? How many? Inventory — retailers and manufacturers with inventory are more work than pure service businesses. Multi-entity or multi-location — related companies and multiple locations add complexity. Prior-year cleanup — if your books are behind or messy, expect a one-time cleanup fee before monthly service starts.
Typical monthly bookkeeping ranges in Montana (2026)
Solo service business (contractor, consultant, therapist), 1–2 accounts, no employees: $250–$400/month.
Small business with 3–5 employees, 3–5 accounts: $400–$650/month.
Growing business, 5–20 employees, multiple accounts, payroll integrated: $600–$1,200/month.
Multi-entity or complex operation (construction with job costing, restaurant, e-commerce with inventory): $1,000–$2,500/month.
Cleanup projects (one-time): $1,500–$6,500 depending on how far behind and how many accounts.
How to avoid overpaying
Never accept an open-ended hourly engagement. Insist on a fixed monthly quote after a discovery call. Get the scope in writing — what is included, what triggers extra fees, what reports you will receive and when.
Ask what happens if you have a question mid-month. If the answer is 'that's billable', keep looking. The right monthly bookkeeping firm should welcome your questions inside the fixed fee.
Bundle bookkeeping with tax prep and planning at the same firm. Splitting the work almost always costs more overall and creates handoff errors.
What you should get for the money
Every account reconciled monthly, not just some. Monthly profit & loss and balance sheet delivered by the 15th of the following month. A dedicated bookkeeper you can email directly. Year-end books closed and delivered to your tax preparer with no back-and-forth. Answers to your questions in one business day. If you are paying $400+/month and not getting all of the above, you are overpaying.