Keeping business and personal money apart when you are a company of one

When you are the whole company, the money does not know it is supposed to be two kinds. The client pays you; you buy groceries and a monitor with the same card; at tax time an accountant asks which was which, and you spend a weekend guessing. Then the next year is the same, because the fix was never in the paperwork. It was in the ledger, twelve months earlier.

The freelancers whose ledgers I read with pleasure all do one thing: they keep two books, and they let exactly one transaction cross between them. This post is that structure, plus the four expenses that end up on the wrong side of the line in almost every ledger I see.

Two books, not two categories#

The tempting shortcut is a "Business" category inside a personal budget. It fails because a category answers "what did I buy?", and the business question is "whose money was it?". A monitor bought with business money is a business asset whether it sits in "Equipment" or "Shopping".

A book is a separate set of accounts and entries with its own totals. In Azno every account and entry belongs to either the Personal book or the Business book, and every screen — dashboard, budgets, the Advisor — can look at one or both. Rent lives in Personal. The invoice from the client lives in Business. Your net worth adds both up and labels them, instead of blurring them.

The test for which book an entry belongs to is not the merchant or the card. It is: would this exist if the business did not? If the answer is no, it is Business.

The one transaction that crosses#

Between the books there should be a single, boring, recurring transfer: the salary. On a fixed day, a fixed amount moves from the business's income account to your personal account. That is your pay. Everything the business earns beyond it stays in the business as reserve or tax money; everything you spend personally comes out of the salary.

This does three things at once:

• It gives your personal budget a stable income to build on, even when the invoices are lumpy — the variable-income post is built entirely around this move.
• It makes "can the business afford it?" a real question with a real answer: the reserve balance, not the balance of the card you also buy coffee with.
• It gives the accountant a clean story: this much came in, this much was paid to the owner, these were the costs. No guessing.

If you occasionally need to move money the other way — you lend the business money for a slow month — record it as exactly that: a transfer from Personal to Business, described as an owner loan, so it can be paid back and so it does not look like income.

The tax reserve is a business account#

The single most common wrong-side entry is the tax bill, paid from personal money in a panic in the spring. Tax on business income is a business cost. Keep a tax reserve account in the Business book, move a fixed percentage of every invoice into it the day it lands, and pay the bill from it. Your personal budget never sees the tax bill at all — which is correct, because your salary was already after it.

The four expenses that land on the wrong side#

1. The phone and the internet#

Half business, half personal, paid from whichever card was nearest. Pick a rule and keep it: either the business pays the whole bill and you accept that it is slightly generous, or you split by a fixed percentage every month as two entries. What does not work is deciding per month. The rule matters less than its consistency, because consistency is what an auditor and a budget both need.

2. Software subscriptions#

The design tool is business. The music service is personal. The cloud storage is… both, and it was bought before the business existed. Go through the recurring list once, assign each to a book, and move the payment method to match. A subscription in the wrong book is a small monthly lie that compounds into a wrong tax return.

3. The car#

Fuel for a client visit is business. Fuel for the weekend is not. The clean version is a per-kilometre rate the business pays you (an entry in Business, a transfer to Personal), with the fuel itself bought personally. The messy version — the business buys all the fuel and you "remember" the personal share — is the one that gets questioned. If you must do the messy version, put the odometer reading in the note of every fuel entry; a year later, it is the only evidence there is.

4. Meals#

Lunch alone at your desk is personal. Lunch with a client is business. Coffee while working from a café is, in most places, personal, no matter how it feels. Record the business ones with who you met in the note, and let everything else stay in Personal. The pleasure of expensing a coffee is not worth the hour of explaining it.

If you would have to explain why an entry is in the Business book, it probably belongs in the other one.

What the numbers look like once it is clean#

Personal book: one income line (salary), the usual life. You can run 50/30/20 on it and get an honest answer, because the business's costs are not inflating your "needs".

Business book: invoices in, tax reserve, software, equipment, the salary out, the reserve balance. You can see, at any moment, the two numbers a one-person company needs: how many months the reserve covers, and what you actually earned this year — which is the salary plus whatever the reserve grew by, not the sum of the invoices.

Questions worth asking an advisor#

The value of two clean books is that the questions get simple:

• "What was my business margin this quarter, after the salary?"
• "How much have I paid myself this year, and how does it compare with last year?"
• "Which subscriptions in the Business book have I not used since spring?"
• "If I raise the salary to €3,000, how many months does the reserve still cover?"

Each of those is a read of entries in one book or the other. When the answer suggests a change — a subscription to cancel, a salary to adjust, a tax percentage to raise — it arrives as a proposal card you confirm, so the line between the books is moved only when you decide to move it. The books stay apart because a person, not a model, keeps them that way; the software's job is to make the right side the easy side.