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Tax Preparation · Run

Tax season, without the season.

Most tax stress isn't the filing, it's the March scramble to reconstruct a year of records for a preparer you're meeting for the first time. File.Business files your business return through a partner CPA who works from books that are already clean, with the right form, deadlines, and deductions handled for you.

File with a partner CPA See the filing flow
Partner CPA network Federal & state Deadlines tracked
Live product

From clean books to e-filed, you watch, not work.

This is a business return moving through the platform: the right form is chosen for your entity, your books flow in, deductions apply, a partner CPA reviews, and it's e-filed. No shoebox, no April reconstruction.

tax-filing · Acme Inc. preparing...
Books synced & reconciledPulled from Books & Finance, no manual entry
Right form selected · 1120-SChosen automatically from your entity type
Deductions appliedHome office, equipment, mileage, and more captured
Partner CPA reviewA licensed CPA checks and signs the return
E-filed · federal & stateConfirmation stored in your Document Vault
Return summary
Total revenue $0
Deductions $0
Taxable income $0
Estimated tax$0
◷ pending federal & state e-file
Prepared from your live books, filed by a licensed CPA. 0/5 stages complete
Why it exists

The return is the easy part. The prep is the pain.

By the time a founder sits down to "do taxes," the hard work has usually already gone wrong: a year of transactions to categorize, receipts to find, a preparer who's never seen the business asking for records that live in five places. The filing itself takes an afternoon; getting ready for it takes weeks and a lot of stress.

It also costs money in ways that aren't obvious. A preparer working from messy records charges more and catches less, missed deductions are money left on the table, and rushed returns are where mistakes and audit risk creep in. The scramble isn't just unpleasant; it's expensive.

Tax Preparation removes the scramble by starting from books that are already clean. Your bookkeeping feeds the return, the right form is selected from your entity type, deadlines are tracked, and a partner CPA prepares and files federal and state. You hand over nothing but approval.

How it works

Four steps, and none of them is "find your receipts."

Because the platform already holds your books, entity, and deadlines, filing starts from a finished foundation instead of a blank folder.

01Books flow inYour reconciled books and entity details populate the return, no reconstruction.
02Right form, every deductionThe correct return for your structure, with the deductions you're entitled to captured.
03A partner CPA files itA licensed CPA reviews, signs, and e-files federal and state on time.
04Confirmation storedThe filed return and confirmation land in your vault, ready if anyone asks.
What you get

A filed return, not a to-do list.

Licensed partner CPAsA real CPA prepares, reviews, and signs your return, not just software producing a form.
The right return1120, 1120-S, 1065 with K-1s, or Schedule C, the correct form for your structure, filed federal and state.
Every deduction capturedHome office, equipment, mileage, and more, surfaced from your books so you don't overpay.
Deadlines never slipMar 15, Apr 15, extensions, and estimates tracked on your compliance calendar automatically.
Starts from clean booksBecause bookkeeping is already reconciled, prep is a handoff, not a reconstruction from bank exports.
Multi-entity readySeveral companies? Each return is filed from its own books, coordinated in one place.
Where it sits in the OS

Taxes are the payoff of keeping everything clean.

Every part of the operating system that tracks money and entities feeds the return, which is why filing here is a handoff, not a project.

Books & FinanceReconciled books are the foundation the return is built on, the reason there's nothing to reconstruct.Explore ComplianceTax deadlines and estimates join your compliance calendar, tracked with your state filings.Explore People & PayrollPayroll returns and W-2/1099s coordinate with your income tax filing, so nothing conflicts.Explore Sales TaxWhere you have nexus, sales-tax registration and filing sit alongside your income return.Explore Document VaultFiled returns, confirmations, and prior years are stored and searchable for audits or loans.Explore BosAIAsk "what's my estimated tax this quarter?" or "which deductions am I missing?", answered live.Explore
FAQ

Business tax preparation, answered.

What does business tax preparation involve?
It means preparing and filing your business's federal and state income tax returns, the right form for your entity (an 1120 for a C-corp, 1120-S for an S-corp, 1065 for a partnership, or Schedule C for a sole proprietor) along with the schedules and owner K-1s that go with them. Because your books and entity are already organized here, that preparation starts from clean information rather than a shoebox.
Which tax return does my business file?
It depends on your structure: a C-corp files 1120, an S-corp files 1120-S, a multi-member LLC or partnership files 1065 with K-1s to owners, and a single-member LLC or sole proprietor reports on Schedule C with the personal return. The platform selects the correct return from your tax classification automatically, so nothing is filed on the wrong form.
When are business tax returns due?
Partnership and S-corp returns are generally due March 15, and C-corp and individual returns April 15, with extensions available, though an extension moves the filing date, not the payment date. We track your deadlines and estimates on your compliance calendar, so a return or extension is never late by accident.
How does my entity type affect my taxes?
It drives everything, which return you file, whether income passes through to your personal return, and whether you owe self-employment tax, so your structure and any S-corp election shape your total tax. We keep your entity and classification organized so your filings match how you're actually taxed, and flag when an election could save you money.
What records do I need for tax preparation?
Income records, expense receipts, bank and card statements, payroll records, prior returns, and your formation and EIN documents, kept organized through the year rather than assembled in a panic. When your books and documents already live on the platform, most of that is simply there, which is the whole point.
Can I deduct business expenses?
Yes, ordinary and necessary business expenses, home office, equipment, mileage, and more reduce your taxable income when properly documented, and missing legitimate deductions means overpaying. Because expenses are already categorized in your books, the return captures what you're entitled to instead of leaving money on the table.
Can File.Business help with my business taxes?
Yes. We keep your entity, EIN, and records organized, flag your filing obligations, deadlines, and available deductions, and file federal and state through a partner CPA, so your business returns are filed correctly and on time rather than becoming a yearly scramble.

Make next tax season a non-event.

File your business return through a partner CPA, from books that are already clean, the right form, every deduction, filed on time.

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Partner CPAs Federal & state Deadlines tracked
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