How to categorize business transactions, with a startup cheat sheet
Categorize each transaction by what it was for, not who you paid: match it to one account in your chart of accounts, such as Software, Payroll or Legal, and keep the receipt. Split payments that cover two things, record moves between your own accounts as transfers, and expense equipment up to $2,500 per item under the IRS safe harbor election, capitalizing anything larger.
Updated · 5 min read · By the Accountable team
The short version
- The IRS tests a deductible business expense as ordinary, meaning common in your field, and necessary, meaning helpful and appropriate for the business.
- Transfers between your own accounts, founder investments and loans are not income or expenses and need their own categories.
- Business meals are generally 50% deductible, and the IRS allows no deduction for entertainment after 2017.
- The de minimis safe harbor lets a business without audited financial statements deduct tangible property up to $2,500 per item or invoice, if it makes the election.
- You can elect to deduct up to $5,000 of startup costs and $5,000 of organizational costs, reduced dollar for dollar once each exceeds $50,000.
Ask what the money bought, then pick one account
The vendor name is a clue and the purpose is the answer. A Google charge could be Workspace email (software), Google Ads (marketing) or a Cloud bill (hosting). Ask what the payment bought, then choose the single account that matches it.
The IRS says a deductible business expense must be both ordinary and necessary. An ordinary expense is one that is common and accepted in your field, and a necessary expense is one that is helpful and appropriate for your business. It also says that if an expense is partly for business and partly personal, you must separate the personal part, which is generally not deductible. That is the reason to split mixed payments instead of forcing them into one category.
A cheat sheet for the charges every startup sees
| Transaction | Category | Watch out for |
|---|---|---|
| AWS, Vercel, Cloudflare for your product | Hosting (cost of revenue) | Hosting for internal tools can go to Software |
| Figma, Notion, Slack, Linear | Software | An annual plan paid upfront is a prepaid expense spread over 12 months under accrual |
| Stripe fees | Merchant fees (cost of revenue) | Book fees as their own line, not netted from revenue |
| Google Ads, LinkedIn Ads | Marketing | Keep paid ads apart from agency fees |
| Gusto, Rippling, Deel subscription fee | Software or payroll provider fees | The wages themselves go to Payroll, not the fee |
| Contractor paid by ACH | Contractors | Collect a W-9 before the first payment |
| Lawyer, registered agent, Delaware franchise tax | Legal and professional, or taxes and licenses | Formation costs may be startup or organizational costs |
| Client lunch | Meals | Generally 50% deductible; write who attended |
| Concert tickets for a client | Not deductible | The IRS allows no entertainment deduction after 2017 |
| Laptop at $1,800 | Equipment, or expense under the safe harbor | Under $2,500 per item you may expense it if you elect the safe harbor |
| Founder wires $50,000 into the company | Equity or a loan, never revenue | Ask whether stock or a note was issued |
| Customer refund | Refunds (reduces revenue) | Do not book it as an expense |
| Move from checking to savings | Transfer | Not income and not an expense |
| Personal charge on the company card | Founder reimbursement owed to the company | Never an expense |
Five mistakes that distort a startup's books
- Counting transfers as spending. A $20,000 move from checking to savings shows up on the bank feed twice. If both sides are categorized as expenses and income, revenue and spending both look $20,000 larger.
- Booking investment money as revenue. A $100,000 seed check is equity. Put it in revenue and your profit and loss shows a profit that does not exist.
- Netting processor fees from revenue. Record the gross sale and the fee separately, or your revenue and your gross margin are both understated.
- Mixing personal and business spending. The personal part is not deductible and muddies every report.
- Leaving a large Uncategorized balance for year end. Fixing 600 transactions in April costs far more than fixing 15 each week.
Expense it or capitalize it: three IRS thresholds that matter
- De minimis safe harbor: the IRS lets a business without an applicable financial statement deduct tangible property up to $2,500 per item or invoice, and $5,000 with one. You elect it each year with a statement attached to a timely filed return, and the amounts must be expensed on your books as well.
- Startup and organizational costs: the IRS says these are generally capital expenditures, but you can elect to deduct up to $5,000 of startup costs and $5,000 of organizational costs, reduced by the amount each total exceeds $50,000. The rest is amortized.
- Meals and entertainment: business meals are generally 50% deductible, and no business deduction is allowed for entertainment, amusement or recreation after 2017.
These are federal rules checked in IRS publications, and your CPA decides which elections fit your return. Your books should separate each kind of cost so the choice stays open.
Categorize weekly in six steps
Step 1: Connect your bank, cards, payroll and payment accounts so every transaction arrives without a manual download.
Step 2: Match transfers between your own accounts first, so they leave the list.
Step 3: Create a rule for every repeat vendor: when the vendor contains “Figma”, use Software.
Step 4: Work through the unsure ones one vendor at a time, and split any payment that covers two things.
Step 5: Attach the receipt to any charge over a few hundred dollars, or every charge if you can.
Step 6: Check that the Uncategorized balance is $0 before the month closes.
On Accountable, every transaction shows why it got its category, and the Needs review tab asks about the unsure ones one vendor at a time, so one answer can categorize all 14 payments to a vendor and make a rule. See how AI bookkeeping works for the method.
Questions founders ask
How do I categorize business transactions?
Match each one to the account in your chart of accounts that describes what the money bought, split payments that cover two things, and record transfers, equity and loans separately. Create a rule for each repeat vendor.
What are the main categories for business expenses?
For a startup: payroll, contractors, software, hosting, marketing, legal and professional, rent, insurance, travel, meals, bank and merchant fees, and taxes and licenses.
Is a founder's investment income?
No. Money a founder puts into the company is equity if stock is issued, or a loan if a note is issued. Neither is revenue.
Are business meals deductible?
Generally 50% of a business meal is deductible under IRS rules, and entertainment is not deductible after 2017. Record who attended and why.
Can AI categorize transactions for me?
Yes, for most of them. Rules handle repeat vendors, an AI model handles new ones with a confidence score, and unsure ones go to you. Check that the books reconcile to your bank each month.
Every transaction categorized, with the reason
Accountable categorizes each transaction with a rule or its AI, shows why, and asks you about the ones it is unsure of. Correct one vendor once and tick Always categorize this vendor this way.
Start freeSources, checked September 30, 2026: