Bookkeeping

Bookkeeping means recording what happened

Bookkeeping is keeping a reliable record of business money activity. You do not have to begin with expensive software. A notebook or spreadsheet can work for a small operation if it is complete, secure, and consistent. Write the date, sale or expense description, category, amount, payment method, and receipt reference. Categories are groups such as supplies, stock, transport, or insurance. Separate personal spending, owner contributions, owner draws, loans, sales, and sales tax. Choose a regular time each week so you are not trying to remember months of small transactions later.

Use receipts and protect your records

A receipt is evidence of payment; a bank entry alone may not explain what was bought or its business purpose. Keep purchase receipts, invoices, contracts, fee reports, and refund records in labeled folders by month or another method you can maintain. Photograph paper receipts before they fade and keep a secure backup you can restore. Retention rules, meaning how long records must be kept, vary by record and tax situation; use official guidance rather than deleting everything after one fixed period. Do not upload real customer records, private tax forms, or bank statements into public worksheets or ordinary AI chats.

Record full sales and fees, not just the payout

If a customer pays $50 and a processor sends you $48.20 after a $1.80 fee, record $50 sales and $1.80 payment expense, not simply $48.20 sales. Separate sales tax, shipping charges, refunds, and marketplace adjustments when relevant. Otherwise you cannot compare prices, expenses, and provider reports accurately. Reconciliation means checking your records against statements and explaining differences. At least monthly, match each deposit and withdrawal, account for outstanding items, and investigate errors. Do not force numbers to match by inventing an expense.

Cash method and accrual method describe timing

Under the cash method, income is generally recorded when received and expenses when paid, with exceptions. Under the accrual method, income is generally recorded when earned and expenses when incurred, even if payment happens later. These are accounting methods, not simply whether customers use physical cash or cards. Inventory and tax rules can affect which treatment is permitted. Ask a qualified bookkeeper or tax professional which method suits your situation and use it consistently. Keep a separate list of unpaid invoices even when using a cash method, so customers who owe you are not forgotten.

Estimates, invoices, receipts, and deposits

An estimate helps a customer understand likely cost before agreeing. An invoice asks for payment for the stated goods or work; it is not proof that payment was received. Include your business contact, a unique invoice number, issue date, clear items and quantities or service scope, subtotal, applicable tax and delivery, deposit already paid, amount due, due date, and approved payment method. A receipt confirms what was paid, when, and any balance remaining. Deposit accounting can depend on the terms and method; show it clearly, and ask how to record it. Never include a customer's full card details.

Write payment and refund expectations before the sale

Payment terms explain when and how payment is due, such as a due date or an agreed deposit and balance. A fictional cleaning estimate might say: defined two-hour service $100 before any applicable tax; $20 deposit credited toward the job; $80 remaining due on completion; additional work requires agreement first. This example is not a legally complete contract. Cancellation, refund, late-charge, and deposit rules must fit your business and local law. Keep records of agreed changes and refunds. When a payment is late, check the record, send a polite reminder with the invoice, and avoid threats or invented fees.

Read an income statement

An income statement, also called a profit-and-loss statement, summarizes revenue and expenses over a period. For a simplified doll shop month, $500 revenue minus $150 cost of goods sold gives $350 gross profit. Packing $20, payment fees $18, and other operating expenses $100 leave $212 net operating profit before owner compensation and income tax. Unsold stock purchases are not automatically the same as cost of goods sold. An owner's draw does not turn that operating profit into a business expense. Use clear labels so the statement answers whether the business earned money from its activity.

Read a balance sheet and a cash-flow statement

A balance sheet shows what the business owns and owes on one date. Assets are resources such as cash, stock, and equipment. Liabilities are amounts owed, such as loans or unpaid bills. Equity is the owner's remaining interest: assets minus liabilities. If assets are $900 and liabilities $300, equity is $600. A cash-flow statement explains cash movement during a period, often grouped into operating activity, investing activity like equipment purchases, and financing activity like loans or owner money. These reports answer different questions; profit, cash, and equity are not interchangeable.

Make a routine you can keep

Weekly, record sales and expenses, save supporting documents, review unpaid invoices, and check upcoming bills. Monthly, reconcile accounts, review profit and cash separately, update stock counts where relevant, and compare actual amounts with the budget. Correct errors with a note so the trail is understandable. Software can help, but wrong categories still produce wrong reports. Use access controls and backups, and ask for qualified help when payroll, inventory, tax filings, or multiple owners make the records more complicated. Your records remain your responsibility even when someone else prepares them.

Steps to take

1. Choose a notebook, spreadsheet, or secure bookkeeping system.
2. Create separate categories for sales, expenses, tax collected, owner money, and loans.
3. Record full transactions with receipt references, not just bank payouts.
4. Draft an estimate, invoice, and receipt using fictional customer details.
5. Reconcile one month and explain any differences.
6. Review the income statement, cash plan, and unpaid invoice list together.

Go deeper in related modules

Not sure what a word means? Check Business Words Made Simple.

• Business Systems — recordkeeping, written procedures, and customer policies
• Cash Flow — payment timing and owner draws
• Selling Online & Taking Payments — checkout and provider choices
• Shopify: Payments — payment and test-order topics
• ChatGPT & AI: Prompt Library — draft with fictional examples, then check the result

Official guidance

Use these official sources for current rules and details. They do not replace advice for your particular business.

• IRS: Recordkeeping (opens in a new tab)

  What records to keep and why.

• IRS: Publication 583 (opens in a new tab)

  Starting a business and keeping records, including accounting methods.