Startup Accounting Software Before Funding: What to Set Up

What does bookkeeping for an early-stage startup have to do before investors look?

A pre-seed startup's books have to record every dollar in the company's name, balance on their own, agree with the bank each month and feed the first Form 1120, including its balance sheet when one is required. The IRS requires no particular system, so the choice is about those jobs, not a brand (IRS recordkeeping). This page assumes a US corporation that files Form 1120.

A case stops being simple when:

• founders paid costs on personal cards before the company had an account;
• money came in on SAFEs, notes or founder loans, which are not sales;
• the company has payroll, contractors, or more than one bank account or card;
• a foreign person owned 25% or more of the stock's voting power or value, directly or indirectly, at any time in the tax year;
• a lead investor has asked for statements.

Each one adds something the books must show and a document the books must match. Gather these first:

• the incorporation papers and the EIN letter;
• bank and card statements since formation;
• a list of costs founders paid personally, with receipts;
• the SAFE or note documents and the cap table;
• payroll and contractor records, if any.

What does the IRS require of a startup's books, whatever the software?

The IRS requires books that support every entry on the return, not a specific system; in most cases no particular kind of record is required (Publication 583). Every person liable for tax must keep the records the IRS prescribes (26 U.S.C. § 6001), and those records include a reconciliation of any differences between the books and the return (26 CFR 1.446-1(a)(4)).

Keep records that support an item of income or deduction until the period of limitations for that return runs out. Keep records on property, such as laptops, until the period runs out for the year you dispose of it in a taxable disposition, even after depreciation ends. Keep employment tax records at least four years after the tax becomes due or is paid, whichever is later (Publication 583). A cost deducted over several returns needs its receipts until the period of limitations runs out on the last return that claims part of it.

Is a spreadsheet enough for early-stage startup bookkeeping?

A spreadsheet can meet the IRS standard when it clearly shows income and expenses and ties to documents (Publication 583). It stops working when the books need checks a spreadsheet cannot give.

Publication 583 describes two designs. A single-entry system is based on the income statement and records the flow of income and expenses. A double-entry system records every transaction as a debit in one account and a credit in another, so it is self-balancing, and its accounts show assets, liabilities and net worth (equity, for a corporation) as well as income and expenses. In plain terms, each transaction is entered twice, once where the money came from and once where it went, and the two sides must match. The IRS says double-entry has built-in checks and balances. A startup holding SAFE or note money, founder loans or stock has liabilities and equity to track, which a list of income and expenses does not show.

For how a spreadsheet can meet the standard and how to move off one, see bookkeeping in a spreadsheet.

What accounting software do most startups use, and what should it do?

No official source reports which software most startups use, and the IRS requires none. Pick any system that does the things below; for a head-to-head comparison, see the software comparison guide. The IRS asks for a description of a computerized system, including its controls against unauthorized additions, changes or deletions, and its chart of accounts (Publication 583).

Should the books be cash or accrual from day one, and must the tax method match?

Choose the method before the first entry, and expect the tax return to use the same one. Taxable income is figured under the method the corporation regularly uses in keeping its books (26 U.S.C. § 446(a); Form 1120 instructions), and Publication 583 says to use the same method to figure taxable income and to keep the books. A corporation chooses its tax method on its first return, and changing it later generally needs IRS approval on Form 3115 (Publication 538). Under the cash method, income counts when received and expenses when paid. Under accrual, income counts when earned and expenses when incurred (Publication 583).

A C corporation generally may not use the cash method. One exception that can apply to a startup is the gross receipts test: average annual gross receipts for the three prior tax years of $32,000,000 or less, and not a tax shelter. That figure is for tax years beginning in 2026 (Revenue Procedure 2025-32); the rule itself is in 26 U.S.C. § 448 and Publication 538. A corporation that has existed for less than three years is tested on the period it has existed, and a short tax year is annualized (§ 448(c)(3)). Gross receipts of related companies, such as a controlled group, are added together (§ 448(c)(2); Form 1120 instructions). A corporation that later fails the test must change to accrual and file Form 3115 (Publication 538). A company that sells products from inventory has further rules; see cash or accrual for a small business.

The records that support the return include a reconciliation of any differences between the books and the return (26 CFR 1.446-1(a)(4)); Form 1120 Schedule M-1 reconciles income per books with income per return. Whether a corporation can keep accrual books for investors and still file on cash is a separate question; see accrual books and a cash-basis tax return. Settle it with a CPA before the first return, because the method is chosen then. If an investor later asks for accrual statements, see switching from cash to accrual accounting.

What do I set up before the first transaction?

Set up six things before the first transaction.

1. A company bank account and a company card. The IRS advises a new business to open a business checking account, keep it apart from personal accounts, deposit all receipts in it and use it for business only. Note the source of each deposit, such as business income, personal funds or a loan (Publication 583). Here that means customer payment, stock purchase, SAFE, note or founder loan. A company card keeps card spending off personal statements.
2. The legal name and EIN. Use the name on the incorporation papers and the EIN letter for the books, bank, payroll and return.
3. The accounting method. Choose it as above.
4. A chart of accounts. Asset, liability and equity accounts stay open permanently; income and expense accounts close each year (Publication 583). Add accounts for SAFEs, notes and founder loans. See chart of accounts for a startup.
5. Who enters, who approves, who reviews. Name who may enter transactions, who approves payments and who reviews each month's bank reconciliation. These controls belong in the system description the IRS asks for (Publication 583).
6. One spending rule. Pay from the company account or card. A cost a founder pays personally goes on the founder-paid list the same week, with the receipt.

How do I record costs the founders paid before the company existed?

Record each founder-paid cost with its date, payee, amount, what it bought and who paid. The books then show either an amount the company owes the founder or a contribution to capital. Settle which with a CPA before investors see the balance sheet.

Tax sorts these costs into groups, so list them by what they bought.

Incorporation alone does not start these deductions: a corporation begins business when it starts the operations it was organized for, not on the day it is incorporated (26 CFR 1.248-1(d)). For each group, the corporation is deemed to elect the deduction and amortization for the year business begins. It can instead elect to capitalize the group on a timely filed return for that year, including extensions, and either choice is irrevocable (26 CFR 1.248-1(c); 26 CFR 1.195-1(b); Form 4562 instructions). Settle the start year and the choice with a CPA before that return is filed. How each group is deducted, whether the corporation can deduct costs paid before it existed, and how to pay founders back are in startup costs before incorporating.

Must the books agree with the corporate tax return, including the balance sheet?

Generally, yes. The books are the source for the return, and the balance sheet on Form 1120, Schedule L, where one is required, should agree with the corporation's books and records (Form 1120 instructions). Total assets entered on page 1 use the method regularly used in keeping the books. Schedule M-1 reconciles income per books with income per return, so any gap must be explainable.

A corporation whose total receipts and year-end total assets are both under $250,000 does not have to complete Schedules L, M-1 and M-2 if it checks Yes on Schedule K, question 13 (Form 1120 instructions). The books still must support the return. Cash from a raise counts toward year-end total assets, so a raise can end that exemption.

For the first return of a company with no revenue, see your startup's first Form 1120.

What will investors and their counsel tie to the books, and which records should be easy to pull?

An investor's reporting rights usually come from the signed investment documents, not from IRS recordkeeping rules. Whatever is asked, a counterparty can tie each book balance to a second document, so keep the records behind these pairs easy to pull.

For the full list of what goes in a data room, see financial records investors ask for in due diligence. For monthly statements and board packages, see monthly financials for investors and the board.

When do I move from doing it myself to a bookkeeper or accountant?

The IRS recordkeeping rules do not require a bookkeeper or accountant, but the corporation stays responsible for its books and records either way (IRS FAQ; 26 U.S.C. § 6001).

A do-it-yourself setup needs a second person's review when any case in the first section's list applies, when the first Form 1120 is near and the balance sheet does not reconcile, or when the monthly match to the bank is more than a month behind. When several apply, it is easier to finish the work before a raise than after an investor's request. For scope and timing, see bookkeeping for a venture-backed startup. To choose, see choosing an accountant for a startup. For what drives the fee, see startup accounting cost.

Example

These examples are illustrative; amounts are in US dollars.

SAFE money and the first spend

Two founders form a Delaware corporation and raise US$250,000 on SAFEs. They open a company bank account and set up double-entry software before the first deposit. The deposit is recorded against the signed SAFEs, not as sales. By month end the books show US$250,000 received, US$40,000 spent, and a bank reconciliation that matches the statement at US$210,000.

Costs paid before the bank account opened

A founder paid US$18,000 before the company had an account: US$5,000 for incorporation and state fees, US$3,000 for a trademark filing and US$10,000 for laptops and software. The founder lists each payment with its date, payee and receipt. The books record each against what it bought, with the US$18,000 shown as owed to the founder or as a contribution, as the CPA advises. When the first return is prepared, the CPA sorts the items by what they bought: organizational costs, start-up costs, assets or something else.

A spreadsheet that outgrows itself

A pre-revenue startup tracks about US$6,000 a month of spending in a spreadsheet kept by one founder. It then adds payroll for two employees, pays contractors and opens a second bank account. The spreadsheet can no longer be reconciled to two statements. The startup first rebuilds the records through a chosen month end and reconciles both accounts to their statements. It then opens accounting software with a complete, balanced set of opening balances (cash, assets, payroll liabilities, amounts owed to founders and equity), not bank balances alone. It keeps the spreadsheet on file, takes full-year figures from both records without counting a transaction twice, and reconciles both accounts monthly from then on.

Different for you?

• Founders paid costs, money came in on SAFEs or notes, a lead investor has asked for statements, or your books are behind or in a spreadsheet: these decide the accounting method, how past spending is recorded and what must tie to the first Form 1120. Get startup accounting and tax help before the raise; for a clean-up, see cleaning up your books before fundraising.
• Payroll has started and the payroll liabilities will not clear: see payroll liabilities that won't clear.
• You closed a priced round or converted SAFEs and notes: see recording a priced round.
• A foreign person owned 25% or more of the stock's voting power or value, directly or indirectly, at any time in the tax year: a foreign person is an individual who is neither a US citizen nor a US resident, or a company not organized in the US. The corporation may also have Form 5472 reporting and must keep books that support its return (Instructions for Form 5472). See bookkeeping for a foreign-owned US company and get startup accounting and tax help.
• Foreign investors are joining the round: see foreign investors in a startup round.
• The company is an LLC taxed as a partnership or sole proprietorship: the corporate rules here do not apply as written; see startup costs paid personally before the LLC.