Business Tax Preparation in Billings, MT
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.
Who this is for
- S-corporations (Form 1120-S)
- C-corporations (Form 1120)
- Partnerships and multi-member LLCs (Form 1065)
- Single-member LLCs and sole proprietors (Schedule C)
- Businesses with multi-state filings or Montana specific credits
What's included
Federal business return
Form 1120-S, 1120, 1065, or Schedule C prepared, reviewed, and e-filed.
Montana state return
State return and any local filings prepared and filed alongside the federal return.
K-1s to owners and partners
K-1s produced and delivered to shareholders and partners in time for their personal returns.
Depreciation & fixed asset schedule
Full asset schedule maintained across years, including Section 179 and bonus depreciation.
Extension filing
Extensions filed when appropriate, with an accurate payment so no interest accrues.
IRS & state notice response
If a notice arrives, we respond — no extra fee for routine correspondence.
Why business tax preparation is different
A business return is not just a bigger personal return. It requires a working balance sheet that ties to the prior year, a fixed asset and depreciation schedule maintained across years, correct handling of owner distributions and basis, and — for S-corps and partnerships — accurate K-1s that flow to owners' personal returns.
When these pieces are wrong, the errors compound. A wrong basis calculation can silently generate the wrong capital gain years later when you sell the business. A wrong K-1 forces every shareholder to amend. A missed election can lock in an unfavorable tax treatment for the life of the entity.
Our business tax prep process
Because we also do your bookkeeping (for most clients), the return process starts with a book close review, not a stack of shoeboxes. We reconcile the balance sheet, tie retained earnings and equity accounts, review the fixed asset schedule, and lock the trial balance.
From there, the return is prepared, reviewed by a second set of eyes, walked through with you, and e-filed. K-1s are delivered to owners early so personal returns are not held up.
For clients who keep their books elsewhere, we accept your trial balance and general ledger and start with a book-to-tax review — with a clear scope and fee if cleanup is needed.
S-corp specifics
S-corporation returns require particular attention to reasonable compensation, shareholder basis, distributions, health insurance for 2% shareholders, and accountable plans. Get any of these wrong and you invite audit risk or lose deductions. We handle each one as part of the standard process, not as an add-on.
Multi-state and Montana-specific issues
If you have employees, property, or sales in more than one state, you likely have a nexus and filing obligation there. We handle multi-state returns and can advise on when a new state creates a filing requirement. On the Montana side, we handle state-specific credits, apportionment, and the state's pass-through entity elections where beneficial.
Related services
Bookkeeping Services
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.
Learn morePayroll 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 moreReady to talk business tax preparation?
Call us or schedule an appointment — we'll answer your questions and quote your work up front.
