How to separate business and personal expenses in one ledger

Why two apps is the wrong default

The instinctive answer to mixed spending is a second tool: one app for the business, one for real life. For a solo earner this usually backfires within two months.

• You maintain neither properly. Two capture habits is more than twice as hard as one, because neither becomes automatic.
• You lose the combined view. The question "can I afford this" does not respect the boundary — it is one pot of money in one bank.
• Transfers between the two become invisible. Paying yourself from business income is a movement you now have to reconcile across systems.
• Cost and friction double for a split that a naming convention would have handled.

The exception is a genuinely separate legal entity with its own bank account, filings, and possibly employees. That is accounting software territory, and this guide is not about that case.

The prefix convention

The lightest structure that actually works: prefix every business category with a consistent marker.

• Business · Software — tools, licences, hosting.
• Business · Travel — client travel, mileage, accommodation.
• Business · Fees — payment processing, platform cuts, professional memberships.
• Business · Equipment — hardware, furniture, repairs.
• Business · Contractors — anyone you pay to help deliver work.
• Business · Marketing — ads, domains, design.

These sit in the same flat list as Groceries and Rent. They sort together, they are one tap to pick, and searching "Business" gives you the whole set. You get the filter without paying the hierarchy tax on every log.

Pick a prefix and never vary it. "Biz" in one place and "Business" in another defeats the entire point, and the sorting quietly breaks.

Use a dedicated account where you can

Categories tell you what a spend was for. Accounts tell you which pot it came from. Using both makes the split far easier to defend.

If you have a separate business card or account, add it as its own account in your ledger. Now every line carries two independent signals, and a mismatch — a personal grocery run on the business card — is visible rather than buried.

In expenie an account is any named store of money with a light type: asset or credit card. A business card gets the credit card type, which means expenses increase the amount owed and paying the bill is a transfer from an asset account that reduces it. Set the statement day, due day, and credit limit and the card's cycle becomes visible alongside everything else.

Handling the genuinely mixed spend

Some costs are honestly both. A phone bill, home internet, a laptop used for work and for evenings.

You have two workable options, and the right one depends on how much precision your situation requires:

1. Log the whole amount to the personal category and handle the business proportion separately at tax time. Simplest, and fine when the amounts are small or the proportion is stable.
2. Split the transaction into two lines — one business, one personal — at the proportion you actually use. More faithful, more work, worth it for large or scrutinised costs.

Whichever you choose, be consistent across the year. An inconsistent method is harder to explain than a slightly rough one. Apportionment rules vary by jurisdiction and this is not tax advice — the point here is that your ledger should record whatever method you and your accountant settle on.

Paying yourself

If business income lands in one account and you move a portion to your personal account, that movement is a transfer, not income and not an expense.

This trips people up constantly. Logging it as income double-counts money you already recorded when the client paid. Logging it as an expense makes your business look unprofitable. A transfer moves money between accounts you own without changing your total, which is exactly what happened.

The same applies to a tax set-aside. Moving money into a Tax account is a transfer. It stops being spendable without pretending it was spent.

The month-end review

Once a month, filter to your Business categories and read them as a block. You are checking three things:

• Did anything personal land in a business category, or on the business card? Fix it now, while you remember.
• Are there business costs sitting in personal categories because you logged them in a hurry?
• Are any of these reimbursable — bought for a client who will pay you back? Those belong in a receivable loan, not in your expense total.

Ten minutes a month keeps the split trustworthy. Left for a year, it becomes an archaeology project you will pay someone else to do.

What one workspace gives you

The payoff for keeping it together is a single statement-first view: spent, received, and net for the month across everything, with business categories filterable inside it.

expenie is a solo product — one private workspace per user. An owner can invite a Member for read-only access to specific pages, which is how you would give an accountant or partner a view without handing over your login or letting them change anything. It is genuinely read-only: Members can never mutate data.

The 14-day full Pro trial includes everything described here. After it ends, Pro is $5.99 per month or $59.90 per year, tax included.