Bookkeeping Basics for Founders

Most bookkeeping pain traces back to the first week of the company. Get these right before the first transaction.

A separate business bank account. QuickBooks puts a business bank account first, because it keeps personal and business money apart. Mixing them, often called commingling, turns every month into a sorting exercise and weakens the record that a cost was a business expense.

A business card for business spending. Same reason. One card, one account, one stream of transactions that all belong in the books.

Bookkeeping software connected to the bank. A bank feed brings transactions in automatically, so your job becomes categorizing and checking rather than typing.

A place for source documents. Invoices, receipts, contracts and payroll reports. The IRS notes that business transactions generate supporting documents that contain information you need to record in your books. Capture each one when it arrives, not in a panic at year end.

A written owner policy. Decide how founders get reimbursed for expenses paid personally and how owner draws or salaries are handled. The right answer depends on your entity type and country, so check with an accountant and write the answer down.

The accounting method decides when a transaction counts. Burkland, a startup accounting firm, states the difference simply. With cash accounting, revenue is recorded when payment is received and expenses when they are paid. With accrual accounting, revenue is recorded when earned and expenses when incurred, regardless of when money moves.

Burkland's view is that cash accounting may be a good choice for very early-stage startups because it keeps costs and effort low, but that once a company scales, generates profit or raises capital, accrual is the way to go. Topo Advisors goes further for venture-backed companies, recommending accrual ideally before raising a seed or Series A round, because investors rely on accrual financials and metrics like gross margin and burn depend on it.

For subscription businesses the case for accrual is strong. If a customer prepays a year, cash accounting books it all in one month and makes that month look spectacular. Accrual spreads it across the year as deferred revenue, which is how the business actually performs.

Your tax method and your management reporting method can differ, and tax rules decide which methods your business may use. Mercury notes that in the U.S. the cash method for tax depends on a gross receipts test with a threshold adjusted for inflation, and that some entities are excluded regardless of size. Check with an accountant before choosing or changing a tax method.

The chart of accounts is the list of categories every transaction is sorted into. It determines what your financial statements can tell you, so it is worth thirty minutes of thought.

Anders CPA describes the balance: you need enough accounts to provide the detail necessary, but not too many where the end user of the financials is overwhelmed. Accounts fall into five types, which map to the two main statements:

AccountingCoach explains that each account typically gets a name and a unique number, with ranges grouped by type, so assets sit in one block of numbers and expenses in another. Software can do this for you, but numbering helps when you later add sub-accounts.

Three design rules for a software startup:

1. Separate cost of revenue from operating expenses. Hosting, third-party API costs and payment processing fees that scale with customers go in cost of revenue. This lets you calculate gross margin, which investors will ask about.
2. Split revenue the way you price. Subscriptions, usage and services each deserve their own line if you sell them.
3. Match categories to your decisions. If you want to know what you spend on paid acquisition, give it its own account rather than burying it in "marketing".

Anders also notes that startups benefit from tailoring accounts to match their business model rather than accepting a software template unchanged. Change the chart rarely and on purpose. Every change makes month-to-month comparisons harder.

Double entry is the rule that every transaction touches at least two accounts and the two sides always balance. QuickBooks describes it as recording each transaction in two accounts: a debit account and a credit account. The underlying identity is the balance sheet equation:

Assets = Liabilities + Equity

Debits increase assets and expenses. Credits increase liabilities, equity and revenue. Four common startup transactions show the pattern:

You will rarely type debits and credits yourself, because software creates them when you categorize a transaction. Knowing the pattern lets you read a journal entry, understand why the balance sheet still balances, and spot an entry that makes no sense.

The monthly close is the routine that turns a month of transactions into numbers you can trust. Wave's small business checklist covers the core steps: record your transactions, reconcile your accounts, review your financial statements and review your tax compliance.

A workable close for a small software company:

1. Record everything. Categorize every bank and card transaction. Attach receipts. Record invoices issued and bills received.
2. Reconcile every account. Match the books to the bank, card, payment processor and payroll statements. QuickBooks explains that reconciling helps you spot duplicate charges, missing transactions or fraud early.
3. Reconcile the payment processor separately. Payouts arrive net of fees, refunds and chargebacks. Book gross revenue and fees as separate lines, not the net payout as revenue.
4. Post accrual adjustments. Recognize the month's share of deferred revenue, record bills for services already received, and spread prepaid expenses. Burkland notes the need to keep a detailed account of what makes up the accrual accounts, such as prepaids, deferred revenue and accrued expenses.
5. Chase overdue invoices. Wave includes managing overdue invoices in its close, because unpaid invoices are cash you have earned but cannot use.
6. Review the statements. Read the income statement, balance sheet and cash flow statement. Compare with last month. Investigate anything that moved more than you expected.
7. Check tax deadlines. Sales tax, payroll tax and estimated income tax deadlines vary by location. Put them on a calendar and check with an accountant about which apply.
8. Lock the period. Close the month in your software so nobody edits it by accident.

Do the first two steps weekly if you can. A month of uncategorized transactions takes far longer to fix than four short weekly sessions.

Keep records as long as you might need to prove what your tax returns say. The IRS puts it this way: keep your records that support an item of income, deduction or credit until the period of limitations for that tax return runs out. The IRS page lists several periods depending on the situation, and separately says to keep employment tax records for at least four years. It also warns that insurers or lenders may require you to keep documents longer.

The IRS also notes that, apart from a few cases, the law does not require any special kind of records. You may choose any system that clearly shows income and expenses. Electronic records count, as long as they are complete and retrievable.

Know when to bring in help. A bookkeeper makes sense once the monthly close takes you more than a few hours. An accountant makes sense from the start for entity setup, tax method, sales tax and payroll questions, and before any fundraise. A fractional finance lead makes sense once you need forecasts, board reporting and investor diligence. Expert agents and playbooks, such as those on Quanta Intelligence, can help you prepare questions and checklists, but tax positions should be confirmed by a qualified accountant.