Monthly Bookkeeping Services in Billings, MT
Clean, current books — every month, without you lifting a finger. Marlow Accounting provides monthly bookkeeping for small businesses across Billings and Montana, delivered by a dedicated team on a fixed monthly price.
Who this is for
- Small businesses doing $250K–$10M in annual revenue
- Owners who are behind on their books or hate their current spreadsheet
- Contractors, medical practices, restaurants, e-commerce, and professional services
- Businesses preparing for a loan, sale, audit, or investor conversation
- Anyone tired of surprise hourly bills from their current bookkeeper
What's included
Monthly transaction categorization
Every transaction from every bank, credit card, loan, and merchant account correctly categorized to your chart of accounts.
Bank & credit card reconciliations
Every account reconciled monthly so your books tie to reality — not an approximation.
Monthly financial reports
Profit & loss, balance sheet, and cash flow delivered on a predictable schedule with plain-English commentary.
QuickBooks Online management
Subscription managed, app connections monitored, chart of accounts kept clean.
Year-end tax package
Books closed and delivered to your tax preparer (or ours) with everything they need — no back-and-forth.
Unlimited email support
Ask questions any time. Real answers from a real bookkeeper who knows your file.
What good bookkeeping actually gets you
Most owners think of bookkeeping as a compliance chore — something they do so their CPA can file a tax return. That is the lowest-value version of the service. Real bookkeeping is the operating system of your business. It answers the questions you should be asking every month: Are we profitable? Which jobs, products, or clients are making us money? Where is cash actually going? Can we afford this hire, this truck, this location?
When your books are clean and current, tax preparation is a rounding error. Loan applications take days instead of weeks. Buyers, investors, and partners take you seriously. And you sleep better because your tax bill has no surprises.
When your books are late, wrong, or crammed into a January panic, everything downstream gets worse: your tax bill is higher because you missed deductions, your decisions are guesses, and your CPA's fees balloon fixing what should have been done monthly.
Our monthly bookkeeping process
In the first two weeks we clean up your file, standardize your chart of accounts, connect your feeds, and document how your business actually runs — vendors, payment processors, loans, inventory, payroll integrations, and any industry-specific quirks.
From month one forward, transactions flow in through secure bank feeds and get categorized weekly. On the first business week of the following month we reconcile every account, produce your reports, flag anything unusual, and answer your questions.
You get a dedicated bookkeeper, backed by a review from a senior accountant. If you have a question mid-month, you email one person who already knows your file — not a call center.
QuickBooks Online, done right
Marlow Accounting is a QuickBooks Online specialist firm. Almost every client we onboard is either already on QBO, moving to it from Desktop, or coming to us with a messy QBO file that needs cleanup. We know the platform inside out — chart of accounts design, class and location tracking, projects, bank rules, app integrations (Gusto, Bill.com, Melio, Stripe, Square, Shopify), and the workarounds for the parts of QBO that do not quite work the way accountants want.
If your file is a mess, we do the cleanup. If you are still on Desktop, we handle the migration. If you have never used accounting software before, we set it up right the first time so you never have to redo it.
Serving Billings and the surrounding Montana
Our office is at 1643 24th St W in Billings, and we work with businesses across Yellowstone County — Laurel, Lockwood, Shepherd, Huntley, Park City — and throughout Montana. Modern bookkeeping is done remotely for most clients, but if you want to sit down in person, drop by the office or schedule an in-person quarterly meeting. We know Montana industries: construction and trades, oil and gas services, agriculture-adjacent businesses, medical practices, restaurants, and the Yellowstone-fueled tourism economy.
Related services
Payroll Services
Payroll is where small mistakes turn into big penalties. Marlow Accounting runs full-service payroll for Montana small businesses — direct deposit, tax filings, year-end forms — integrated with your bookkeeping so nothing falls through the cracks.
Learn moreTax Planning
Filing a tax return is not tax planning. Tax planning is what happens between January and December — the strategy that decides how much you owe when the return is prepared. Marlow Accounting builds proactive tax plans for Montana business owners, then executes them across the year.
Learn moreBusiness Tax Preparation
Business tax returns done right — 1120-S, 1120, 1065, and Schedule C. Prepared by a team that already knows your books, coordinated with your tax plan, and filed on time without a March fire drill.
Learn moreReady to talk bookkeeping services?
Call us or schedule an appointment — we'll answer your questions and quote your work up front.