Keeping personal and business separate: why and how
Written by Ilias Aarrass7 min read · Published on · Last reviewed on 
In short
Work with three pots: a business account for turnover and costs, a reservation account for tax and VAT, and a fixed monthly amount going to your private account.
- A business account is not legally required, but most banks prohibit business use of a private account.
- For a sole trader, a private withdrawal or contribution is not wages, revenue or a cost.
- If you pay a business cost privately, the cost and the VAT remain deductible.
- Your records must be kept for seven years and remain verifiable.
One of the most important habits for healthy bookkeeping is keeping personal and business strictly separate. Yet for many freelancers they get mixed up. That causes unclear bookkeeping and hassle with tax. This article explains why and how to separate them.
Why is separating important?
If personal and business get mixed up, your bookkeeping becomes unclear and in an audit it's hard to see what's business. That costs time and can lead to errors or missed deductions. A strict separation makes your bookkeeping clear and your VAT return simpler.
How do you separate personal and business?
The most important step is a separate business account for all your business income and expenses. Use that account consistently and only move money to private via a deliberate transfer. This way you see at a glance what's business and what isn't.
What do you do with mixed expenses?
Some expenses are partly business, partly personal, such as your phone. Then record only the business part as costs and keep reasonable documentation. If you accidentally pay a business cost privately, process that neatly via your bookkeeping so it's correct.
The three-account system
The simplest set-up that survives practice: a business account for all turnover and costs, a reservation account for tax and VAT, and your private account receiving a fixed monthly amount, like a salary.
- All invoices are paid into your business account; all business costs leave from it too.
- With every incoming payment you immediately move the tax and VAT share to the reservation account.
- Monthly, one fixed amount goes private; that is your income, and it becomes habit surprisingly fast.
- If you do pay something business-related privately (or vice versa), book it the same week as a private contribution or withdrawal; do not let it drift.
Private withdrawal and contribution: know the two terms
Money moving from your business account to private is a private withdrawal; money you put into the business from private is a private contribution. For a sole trader, neither is wages, revenue or a cost: they do not touch your profit and carry no VAT. You still book them, because that keeps your records balanced and shows at year-end exactly what you took out of the business. Private withdrawals and contributions covers how to process them.
Belongings are a different story from money
Separating accounts is about money flows. For items you use both privately and for business, such as a car, laptop or workspace, separate tax rules apply: with genuinely mixed use you can often choose whether something belongs to business or private assets, and that choice affects your deductions and a later sale. How that choice works is in business or private assets; for the car, the VAT correction for private use comes on top.
The three-account system
Separating private and business gets easy when you hang it on accounts instead of discipline. This is the split that works in practice.
| Account | What goes in | What goes out |
|---|---|---|
| Business account | All turnover | All business costs, plus your monthly drawing |
| Reserve account | VAT and around 30 percent of your profit | Only returns and assessments, nothing else |
| Private account | A fixed monthly amount from the business | All your private spending |
| Mixed expense | Pay from the business | Correct the private share at year-end |
Frequently asked questions
Is a business account mandatory for a sole trader?
Not legally, but most banks' terms prohibit business use of a private account. Practically, a separate account is also the foundation of verifiable records.
How do I take money out for private use?
Simply transfer it to your private account; for a sole trader that is a private withdrawal, neither wages nor a cost. A fixed monthly amount brings calm and clarity.
I paid a business cost privately. Is it lost?
No, you book it as a private contribution with the invoice as evidence. The cost and VAT stay deductible; it is just extra work a separate account would have prevented.
May I use my private car and phone for business?
Yes, under the matching rules: € 0.25 per business kilometre for the car and a reasonable business split for your phone. Separation is about money flows, not belongings.
What does separation yield in a tax audit?
Time and credibility. An inspector finding only business items in the business account finishes sooner and asks fewer questions than with an account full of groceries and subscriptions.
How much should the reservation account hold?
The VAT of your open period plus your income tax and healthcare reservation, usually 25 to 40 per cent of profit to date. See how much to set aside.
Sources
- Keeping records: 7 and 10 yearsBelastingdienst · belastingdienst.nl
Sources checked on
This article provides general information based on the rules known for 2026 and does not replace personal tax advice. For your specific situation, we're happy to take a look with you.
