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Where to actually start keeping books

Day one, with no accounting background and no system. What to record, where to put it, and the three habits that make everything after this easy.

12 min read · Level 1

The point

Bookkeeping is not accounting, and confusing the two is why founders freeze. Accounting is interpretation — margins, accruals, tax positions, judgement. Bookkeeping is writing down what happened, and you are already qualified to do it. Every founder who feels behind on their finances is behind on the second thing, not the first. The company that knows exactly what it spent last month is not run by a better accountant; it is run by someone who spent twenty minutes a week typing things in.

What is it?

Bookkeeping is recording every pound in and every pound out, categorised and dated, in one place.

That is the whole job. Three habits:

  • One business bank account, separate from personal, that every transaction flows through.
  • One system — accounting software, or a spreadsheet — connected to it.
  • A weekly fifteen minutes categorising what came through.
  • Why does a founder care?

    Because every number you will ever want comes out of this. Your runway, your margin, your burn, your investor update, your tax return. If the underlying record is patchy, everything downstream is a guess — and you will not know it is a guess.

    And because the cost of starting late is not linear. Reconstructing eight months from bank statements and memory takes a full weekend and produces books nobody trusts. Doing it weekly takes fifteen minutes and produces books you can raise on.

    Example

    A founder six months in, no bookkeeping. They know roughly what is in the bank and nothing else.

    Asked what they spent on infrastructure last quarter, they cannot answer. Asked their gross margin, they cannot answer. They are about to hire and cannot say what it does to runway.

    The fix took one Saturday:

  • Opened a business account and moved everything to it
  • Connected accounting software to the bank feed
  • Imported six months of transactions
  • Categorised them — 240 transactions, about three hours, and most auto-categorised after the first thirty
  • Set a recurring Friday reminder, fifteen minutes
  • They now know their burn to the pound, discovered £180/month of subscriptions nobody used, and found two customer payments that had never arrived and nobody had chased.

    The £180 and the two missing payments paid for the Saturday several times over. That is the usual outcome, and it is not a coincidence: nobody who has never looked has clean books.

    The common mistake

    First-time founders wait until they "need" bookkeeping — usually the first tax deadline or the first investor conversation. Both are the worst possible moments to start, because both come with a deadline and neither leaves time to fix what you find.

    The second mistake: running business spending through a personal account and promising to sort it out later. Untangling six months of mixed transactions is genuinely miserable, and in some company structures it also weakens the liability separation incorporating was meant to give you.

    The third: buying sophisticated software and never opening it. The system does not matter nearly as much as the weekly habit.

    How it works

    Step 1: Open a business bank account

    Same week you incorporate. Every business pound in and out goes through it, with no exceptions — the exceptions are what make reconstruction hard.

    Step 2: Pick one system and connect the bank feed

    Accounting software with an automatic feed removes most of the work. A spreadsheet is fine below roughly twenty transactions a month; the feed is what matters more than the brand.

    Step 3: Set up a small chart of accounts

    Fifteen to twenty-five categories. The next lesson covers this — do not skip it and invent categories transaction by transaction.

    Step 4: Import everything from day one

    Even if that means back-filling months. It is a one-off cost and it is what makes the first real report possible.

    Step 5: Book fifteen minutes, weekly, recurring

    Friday afternoon. Categorise anything uncategorised, flag anything you do not recognise. This is the entire discipline.

    Step 6: Keep the receipts attached

    Photograph them into the same system as you go. Hunting for a receipt eleven months later is the single most avoidable finance chore there is.

    When to use this

    From your first transaction. There is no size below which this is not worth doing — the smaller you are, the less it costs to start.

    When not to use it

    Do not build an elaborate system pre-incorporation with three transactions. A spreadsheet with date, amount, category and note is genuinely enough until money is moving regularly.

    How founders actually did it

    Buffer published everything

    Buffer made its revenue, pricing, and even individual salaries public from its early years, on the argument that transparency built trust with customers and candidates. Whatever you think of publishing salaries, the operational consequence is the interesting part: a company that publishes its numbers monthly has no option but to close its books monthly.

    Pick an external commitment that forces the close — investors, a co-founder, a public post. Discipline you owe someone else survives a busy month; discipline you owe yourself does not.

    The shape this usually takes

    Almost every founder's first bookkeeping session finds the same three things: a subscription nobody uses, a customer payment that never arrived, and at least one expense categorised so vaguely that it cannot be defended at tax time. None of these are exotic. They are what happens when nobody has looked.

    Expect the first session to pay for itself. That is not optimism, it is what an unexamined account always contains.

    Do this now

    • Open a business bank account if you have not
    • Connect accounting software to the bank feed
    • Put a recurring fifteen-minute slot in your calendar for Friday

    Create a free account to read the rest and apply it to your own startup.

    Next: Cash or accrual — the choice that changes every number