Real double-entry accounting, not a spreadsheet pretending to be one. Invoices, bills, payments and the reports that matter, built by the Zelvorm team and free for as long as you use it.
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Balance sheet · as of today
Journal · INV-0042
Dr · CrInvoice
INV-0042
Northwind Retail
£1,440.00
Scroll to post it. Every figure here is real double-entry, on Zelvorm Books' own chart of accounts.
Invoice
INV-0042
Northwind Retail · due 1 Dec
Invoice
INV-0042
Northwind Retail · due 1 Dec
Journal
Posting writes this for you.
Debits = credits
Account balances
- 01 / 05
Write the invoice.
Draft it, check it, then post it. Nothing touches your books until you do.
- 02 / 05
Posting writes the journal.
One click records both sides: Northwind owes you £1,440, and your sales and the VAT you'll pass on go up.
- 03 / 05
Debits always equal credits.
An entry that doesn't balance is refused by the database itself, not just the screen. Posted entries can't be edited, only reversed.
- 04 / 05
Get paid. The books follow.
Record the payment and the receivable clears into your bank. Part payments and voids keep the invoice in step.
- 05 / 05
Reports, straight from the journal.
Trial balance, profit and loss, balance sheet and aging, up to date the moment you post.
The core ledger is free for as long as you use it. No card, and no “trial” that ends in a bill.
Double entry, enforced
Every entry balances or it's refused. The database checks it, not just the screen.
The original stays, exactly as posted
Posted means permanent
Posted entries can't be edited. A correction is a linked reversal, so your history stays honest.
£940.00 balance due
Invoices and part payments
Post an invoice, take it in parts, always know the balance due, and void one cleanly if you need to.
Bills, to the penny
The same for what you owe: post a bill, then pay it in parts or in full.
Aging at a glance
What's owed to you and what you owe, sorted by how overdue it is.
Trial balance
1,440 = 1,440
Profit & loss
Net £1,200.00
Balance sheet
Assets £1,440
Statements
Line by line
The reports that matter
Trial balance, profit and loss, balance sheet, and a full statement for every account.
Customers, suppliers, or both.
Customers and suppliers
One contact book behind every invoice, bill and payment.
A paid upgrade, when you need it.
For businesses that outgrow the basics. The core stays free.
Zelvorm Books is separate from our studio work. Signing up never adds you to our client list, and every row of your data is locked to your own business by the database's row-level security.
Create your free accountFree bookkeeping, answered.
New to bookkeeping? Start with our plain-English guides, from double entry and invoicing to reading a balance sheet.
Yes. The core ledger (chart of accounts, journals, invoices, bills, payments and reports) is free for as long as you use it. There's no card to enter and no trial that ends in a bill. Point of sale, inventory and payroll are coming as paid upgrades for businesses that outgrow the basics.
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