How to Set Up Small Business Books the Right Way (9 Steps)
Enflow OS Team · Published
Quick answer: To set up small business books, pick a start date (usually January 1), connect every bank and credit card account, enter each account's opening balance from the statement for the day before, record loans and equipment in one journal entry, close the books before the start date, categorize every transaction, match card payouts, reconcile monthly, and give your accountant their own login.
Key takeaways
- Your bookkeeping start date is usually January 1 of the first year you haven't filed taxes for.
- Opening balances come from bank statements for the day before the start date; for credit cards, enter the amount owed.
- Loans, equipment and owner money from before the start go in one journal entry.
- Close the books through the day before the start so older bank history can't change your numbers.
- Reconcile every account monthly, and give your accountant their own login instead of sharing yours.
If you want to set up small business books that your accountant can trust, the order matters more than the software. Most bookkeeping problems start on day one. Someone connects a bank account, the software pulls in two years of history, a few hundred transactions get categorized by guesswork, and nobody ever writes down what the business owned and owed when the books began. A year later the balance sheet doesn't match the bank, last year's numbers have quietly changed, and the accountant bills hours to untangle it.
Setting up properly takes an afternoon. These nine steps work in any bookkeeping software. At the end we show where each one lives in Enflow Books, which has a Get started checklist that ticks each step off as you finish it.
Why does setup matter?
Small business bookkeeping software can only add up the transactions it sees. Everything that happened before it started watching, such as the cash already in the bank, the card balance you carried over and the loan on your truck, has to be told to it once. Get that starting point right and every report after it is right. Get it wrong and every balance sheet you run is off by the same mystery amount.
Step 1: Pick a start date
Your bookkeeping start date is the first day your new books cover. For most businesses it's January 1 of the first year you haven't filed taxes for yet. If it's November and last year's return is already filed, start on January 1 of this year. If last year isn't filed, start on January 1 of last year so your accountant gets a full year from one system.
- Starting mid-year works too (for example, the first day of the month you switch), but your accountant will need last year's software or spreadsheets for the months before.
- Write the start date down. Steps 3, 4 and 5 all use the day before it.
Step 2: Connect every bank account and credit card
Connect every account business money moves through: checking, savings, and each credit card you pay business costs with. When you move money from checking to savings, or pay the card from checking, both sides need to be in your books so the transfer cancels out. Leave one account out and that transfer looks like income or spending.
If you mix personal and business spending on one card, connect it anyway and mark the personal charges as owner draws. Better still, get a separate business card going forward.
Step 3: Enter each account's opening balance
For each account, find the statement that covers the day before your start date and enter the balance at the end of that day. If you start on January 1, that's the December 31 balance, usually the ending balance on your December statement.
- Bank accounts: the balance in the account.
- Credit cards: the amount you owed, not your available credit.
- Use the statement, not today's balance minus some transactions. Pending charges and timing differences make that math drift.
| Account | What to enter | Date | Where to find it |
|---|---|---|---|
| Checking or savings | The account balance | December 31, 2025 | Ending balance on the December statement |
| Credit card | The amount owed | December 31, 2025 | Balance on the statement covering December 31 |
| Payment processor balance | Funds not yet paid out | December 31, 2025 | Balance report in the processor's dashboard |
| Loan | The amount still owed | December 31, 2025 | Lender's statement (goes in the journal entry, step 4) |
Each opening balance is where that account starts on your balance sheet. Every later balance is the opening balance plus the transactions after it, so if this number is right, the balance sheet will match the bank.
Step 4: Record what you owned and owed before the start
Bank accounts aren't the whole picture. Before your start date you may already have had a business loan, a vehicle or equipment, money a customer owed you, or money you put into the business yourself. None of that shows up in a bank feed.
Record it as one journal entry dated the day before your start date, with a line for each item. Your accountant usually prepares this from last year's tax return or balance sheet, so this is a good step to hand them. If your business has none of these, skip it.
Step 5: Close the books before the start date
When you connect a bank, it often sends months or years of older transactions. Those belong to a period your old system (or your tax return) already covers. Closing the books through the day before your start date locks everything on or before that date, so nobody recategorizes an old transaction by accident and automatic rules leave them alone.
Do the same every year: once a year's taxes are filed, close the books through December 31 of that year. If something truly needs to change later, the person who closed the period can reopen it, and the change shows up in the history.
Step 6: Set up categories, review transactions and add rules
Categories, called a chart of accounts in accounting, are how income and costs get sorted into your profit and loss and onto tax lines. Start from a list made for your industry instead of a generic one; it saves hours and matches how your accountant thinks about your business.
- Pick the category set for your industry.
- Go through every transaction since your start date until none are left without a category. Most software suggests one; approve or change it.
- Each time you fix one that will come back (the same fuel station, software subscription or supplier), make a rule so it sorts itself next time.
Step 7: Match card payouts to bank deposits
If clients pay invoices or tickets by card, your payment processor doesn't deposit each payment separately. It sends batches, minus its fees and any refunds. If you count each invoice payment as income and also count the deposit as income, your sales are doubled; if you only count the deposit, the fees disappear.
The fix is to split each payout into its parts (sales, refunds, fees) and match it to the deposit it became. Then the invoices are income, the fees are an expense, and the deposit is just money arriving. If you don't take card payments, skip this step.
Step 8: Reconcile every account each month
Bank reconciliation means checking your books against the bank's statement: same ending balance, same transactions. When the statement arrives each month, enter its end date and ending balance, tick off the transactions it lists, and confirm the difference is zero. Missing, duplicated or wrong-dated transactions show up right away, while you still remember them.
Monthly reconciling turns year-end from a project into a download.
Step 9: Bring in your accountant
Give your accountant their own login rather than sharing yours: proper accountant access means they see the books without your email, clients or settings, and every change they make should carry their name. Ask them questions on the transaction itself instead of in email threads, so the answer stays with the record.
At year end, send them one package with the year's reports and receipts. Once they've filed, close the year (step 5) so the numbers they filed can't move.
Doing this in Enflow Books
Enflow Books has a Get started page (Books → Get started) that walks through these nine steps and checks each one off from your actual data, with a button to the screen where you do it. Here's where each step lives:
- Start date: pick it at the top of Books → Get started.
- Accounts: Connect bank on the Books overview. Books includes up to 3 connected accounts.
- Opening balances: Books → Statements → Opening balances. The Get started link fills in the day before your start date for you.
- Before-start items: a journal entry in Books → Journal (debits must equal credits).
- Closing: Books → Close & history. Rules and AI suggestions skip closed periods, and every later change is listed in the history.
- Categories: choose your industry pack, work through Books → Review, and add rules in Books → Categories.
- Card payouts: connect Stripe payments in Invoices, then Books → Payouts splits each payout into sales, refunds and fees and matches it to the deposit.
- Reconciling: Books → Reconcile, one account and statement at a time. Get started ticks this when every account is reconciled through the end of last month.
- Accountant: invite them in Team → Accountants (2 accountant seats are free). They get Books only, view or edit as you choose. Questions go on the transaction in Books → Questions, and the year-end zip in Books → Reports has the P&L, balance sheet, trial balance, general ledger, journal, Schedule C summary, sales tax, 1099 report and receipts.
This guide covers how to set up the books, not tax advice. Your accountant is the right person to confirm your start date and prepare the before-start journal entry.
Frequently asked questions
What is an opening balance in bookkeeping?
An opening balance is what an account held on the day before your books start, taken from the bank or card statement. For a bank account it's the balance; for a credit card it's the amount owed. Every later balance is the opening balance plus the transactions after it.
What start date should I use for my books?
Most small businesses start on January 1 of the first year they haven't filed taxes for. If last year's return is already filed, start January 1 of this year. If it isn't, start January 1 of last year so your accountant gets a full year from one system.
How often should I reconcile my bank accounts?
Reconcile every bank and credit card account once a month, when the statement arrives. Monthly bank reconciliation catches missing, duplicated or wrong-dated transactions while you still remember them, and makes year-end close a download instead of a project.
What does it mean to close the books?
To close the books means locking every transaction on or before a date so nothing in that period can change. Close through the day before your start date when you set up, and close each year once its taxes are filed. Reopening a closed period should be rare and recorded.
Do I need a chart of accounts for a small business?
Yes. A chart of accounts is the list of categories your income, costs, assets and debts are sorted into, and it decides what your profit and loss and tax lines show. Start from one made for your industry rather than building it from scratch.
How do I record a loan or equipment I had before my books started?
Record everything you owned and owed before the start date that isn't in a bank account, such as loans, vehicles, equipment and money you put in, as one journal entry dated the day before the start. Your accountant usually prepares it from last year's balance sheet.
Should my accountant have their own login?
Yes. Give your accountant their own login with access to the books only, not your email, clients or settings. Every change then carries their name, questions stay attached to the transaction, and you can remove access without changing your password.
How long does it take to set up small business books?
Most small businesses can set up their books in an afternoon: picking a start date, connecting accounts and entering opening balances takes under an hour. Categorizing the transactions since the start date takes longer the later in the year you begin.