Monthly bookkeeping is easier when it is a short routine instead of a year-end rescue. The goal is not to become an accountant. It is to make sure every dollar in and out has a date, an amount, and a clear explanation while you still remember it.
The IRS says your recordkeeping system should clearly show income and expenses. It does not require a particular app. A spreadsheet can work if you use it consistently, keep supporting documents, and review it against your real accounts.
The nine-step monthly bookkeeping checklist
1. Record every way customers paid you
Add cash jobs, checks, bank transfers, card payments, Venmo, Zelle, Cash App, and processor deposits. Do not treat the bank statement as the full revenue record if some money never reached that account.
2. Record every business expense
Bring together purchases from the business card, bank account, payment apps, and cash. If you paid a business expense personally, record it clearly so your owner activity does not get mixed with ordinary operating expenses.
3. Match the bank and card statements
Compare your entries with each monthly statement. Every withdrawal should have a purpose, and every deposit should either be income, an owner contribution, a loan, or another clearly identified item.
4. Categorize expenses consistently
Use a small, stable list of categories. Common Schedule C lines include advertising, contract labor, insurance, legal and professional services, office expense, repairs, supplies, travel, meals, utilities, and wages. Ask your preparer about anything unclear rather than guessing.
5. Review helpers and contractors
Keep the helper's name, date, amount, payment method, and work performed together. Ask a qualified professional about worker classification and current reporting requirements; a payment total alone does not decide either.
6. Check supporting documents
Make sure receipts, invoices, statements, and notes support your entries. Add a business-purpose note when the reason is not obvious, especially for travel and meals.
7. Review money in, money out, and net
Subtract money out from money in and compare the result with recent months. A large change may be real, but it can also reveal a missing cash job, a duplicate expense, or an item entered in the wrong month.
8. Review your tax reserve
Consider moving money to a separate savings account for future taxes. The right amount depends on your business, location, other income, and tax situation, so confirm a suitable approach with a qualified tax professional.
9. Resolve questions and close the month
Do not carry an unexplained pile into next month. Make a short question list, resolve what you can, and mark the month complete. If new information arrives later, correct the record rather than hiding the change.
A simple monthly example
Suppose your records show $8,450 from bank deposits, $1,125 from cash and payment apps, and $4,280 of expenses. Your complete money-in total is $9,575, not $8,450. Net before owner draws and tax is $5,295. That one combined view is why off-bank income belongs in the same monthly routine.
Download the free Excel template
The workbook below includes the nine-step checklist, a monthly entry sheet with useful dropdowns, two clearly labeled fictional examples, and a read-me page. Delete the examples before using it for your own business.
When a spreadsheet stops being enough
A spreadsheet works when one owner enters a modest number of transactions and closes the month consistently. The LedgerFast Year Book turns that same routine into 12 guided month sheets with running totals and a year-end PDF or Excel packet for $99 per tax year.
Disclaimer
This checklist and workbook are general educational recordkeeping aids, not tax, legal, or accounting advice. LedgerFast does not prepare or file tax returns. Requirements depend on your facts and can change; confirm decisions with the IRS and a qualified professional.