Invoice software for accountants
Built by accountants, for accountants. Multi-client workspaces, multi-business support, VAT handled correctly, and exports your bookkeeping software can actually read.
Gratis plan · Intet betalingskort · Klar på få minutter
De problemer, du faktisk har
Client data scattered across tools
Every client uses a different invoicing tool. Pulling year-end data is a re-keying job.
VAT done wrong, by clients
You spend half your billable time fixing VAT on client-issued invoices that never should have gone out.
VAT breakdowns clients can't produce
Net, VAT, and gross: most client-issued invoices don't separate them cleanly, and you end up fixing the math.
Exports that don't import
Your bookkeeping tool wants CSV in a specific shape. Generic invoice exports never match.
Invoicing your clients can actually do right
Lemon Invoice was built by a working accountant. It enforces correct numbering, applies consistent VAT handling, and exports cleanly. Give it to your clients and watch your year-end workload shrink.
Sådan fungerer det
Create your free account
Sign up with a business email and the workspace is ready immediately: no credit card, and nothing for a client to install. Because it runs entirely in the browser, you can set a new client up during a call, or from home the evening before an onboarding meeting, without waiting on any software to arrive.
Add your business and clients
Create a business record for each client (logo, invoice numbering, VAT settings) and, if they're migrating off another tool, import their customer and product list from a spreadsheet instead of re-keying it by hand. Manage every client's entity from your own login while each of them keeps a separate one.
Send your first invoice
Once a client's set up, they (or you, on their behalf) pick a customer, add line items with the correct VAT rate per line, and send the invoice as a branded PDF or link. From then on, numbering is enforced automatically and every invoice is easy to reconcile at year-end.
Det får du
Multi-business support
One client account, multiple legal entities. Manage them all from one login.
VAT done correctly
Per-line VAT rates with a clear net, VAT, and gross breakdown on every document, out of the box.
Enforced numbering
Sequential, locked invoice numbering. No duplicates, no gaps, no excuses.
Clean exports
One-click CSV exports of invoices and payments, formatted for your bookkeeping workflow.
Audit trail
Every invoice is timestamped when it's created, sent, and updated, so you always have a clear record.
Multi-language for every client
The app is available in 9 languages, so clients can work in their own without your help.
Invoicing for accountants, in practice
The right invoice software for accountants isn't really for you. It's the tool you hand your clients so their invoices stop being your problem. Set each client up as their own business, with its own branding, invoice numbering, and VAT settings, and manage every one of them from a single login instead of chasing separate spreadsheets and half-finished template files. Numbering is sequential and enforced automatically, so there are no gaps or duplicate invoice numbers left for you to explain when a client's records get reviewed, and a client who used to hand you a folder of mismatched PDFs starts producing something consistent instead.
VAT is where most client-issued invoices go wrong before they ever land on your desk. Set a rate per line item and every invoice shows a clean net, VAT, and gross breakdown, in the same format every time, regardless of which client sent it or which rate applies to a given product or service. If a client sells across borders, they can bill in a customer's own currency while your reporting still consolidates back into one currency, so you're not reconciling five currencies by hand at year-end.
When something needs correcting after an invoice has gone out, a client issues a credit note against the original instead of editing or deleting it, which keeps the numbering sequence intact and gives you an honest paper trail instead of a mystery gap in the records. At close, pull a one-click export of invoices and payments formatted for your bookkeeping workflow. There's no direct integration with third-party bookkeeping software today, so the export still needs importing on your end, but it arrives in a shape you can actually use instead of a generic PDF dump.
Clients who work internationally add their own complications, and the interface is available in 9 languages, so a client who's more comfortable working in their own language doesn't need to lean on you just to send an invoice. Give each client their own login so they only see their own entity, while you keep visibility across every business you manage. The fewer questions clients need to ask between filing deadlines, the more of your billable time stays yours. A client running more than one legal entity works the same way: manage both under one login, each with its own numbering and VAT settings, instead of you unpicking two clients' invoices that quietly got mixed together.
Ready to get your clients invoicing correctly?
Start freeSpørgsmål og svar
Can I manage multiple clients from one account?+
Yes. The Premium plan supports multiple businesses under one login, so you can manage your own practice and your clients' entities from one place.
Does it export to my bookkeeping software?+
Lemon Invoice exports invoice and payment data as CSV, formatted for your bookkeeping workflow. There is no direct integration with third-party bookkeeping tools today.
Does it show a clear VAT breakdown for my clients?+
Yes. Every invoice shows net, VAT per rate, and gross totals clearly separated, so the numbers are easy to book.
Can clients see their data without bothering me?+
Yes. That's the whole point. Each client has their own login and only sees their entities. You see all of them.
Do I pay separately for each client I invoice for?+
No. Your own subscription covers every client business you add. The Premium plan supports multiple businesses under one login, so there's no separate charge per client. There's no per-invoice fee either, so a busier client doesn't cost more partway through the year. You can add a brand-new client's business the same day you take them on.
How long does it take to onboard a new client?+
Setting up a new client takes minutes: create their business profile, import their customer and product list from a spreadsheet if they're moving off another tool, and they can send their first invoice the same day. The interface is deliberately simple, so most clients need nothing more than a short walkthrough before they're comfortable sending invoices on their own.
Can a client issue a credit note if they make a mistake?+
Yes. Rather than editing or deleting a sent invoice, a client issues a credit note against it, which keeps the numbering sequence intact and gives you a clean audit trail to reconcile at year-end: no unexplained gaps or quietly edited totals to chase down when you close the books. It's the same discipline you'd expect from proper bookkeeping, just enforced automatically instead of relying on the client to remember it.
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