Invoice software for IT & digital services

Quote a project, invoice a client on the other side of the world, and keep withholding tax straight on Thai receipts — without three different tools stitched together.

Free plan · No credit card · Set up in minutes

The problems you actually have

Clients who pay in dollars, not baht

A US or European client pays in their own currency, and your invoice needs to look native to them — not like a converted afterthought with a hand-typed exchange rate.

Work that starts as a quote, not a fixed invoice

A project scope gets agreed before a line of code is written. If the quote and the invoice live in different tools, the numbers drift the moment scope changes.

Everything happens remotely

No in-person handoff, no signature on paper — a client needs to review, approve, and pay from a link, not a PDF attachment that gets lost in a long email thread.

Withholding tax that doesn't match what lands in your account

A Thai B2B client withholds 3% before paying a services invoice, and if that gap isn't tracked anywhere, your 'paid' total never quite matches what actually hit your bank account.

Quote, invoice, and reconcile — without the spreadsheet

Lemon Invoice lets you quote a project, convert it into an invoice the moment it's approved, and bill foreign clients in the currency they pay in. Flag Thai clients who withhold tax and the amount withheld is recorded on the receipt, so what actually lands in your account reconciles with what you invoiced.

How it works

1

Create your free account

Sign up with your email and you're ready to quote your first project within a minute — no credit card, and nothing to install before you can send a proposal to a client anywhere in the world.

2

Add your business and clients

Set up your business profile once, then add clients with the currency they pay in — and flag any Thai client who withholds tax at source, so it's already set before you invoice them. Import an existing client list from a spreadsheet instead of retyping it.

3

Send your first quote or invoice

Scope the project as a quote, send it as a link the client can review and approve remotely, and convert it into an invoice the moment it's confirmed. If the client withholds tax, the amount withheld shows on the receipt once they pay, so your records reconcile automatically.

What you get

Quote-to-invoice in one click

Scope a project as a quote, and once it's approved, convert it straight into an invoice — same line items, nothing retyped.

Bill foreign clients in their currency

Invoice in USD, EUR, or whatever a client pays in, with reports still consolidated in your home currency.

Withholding tax tracked on receipts

Flag a client as subject to withholding tax, and the amount withheld is captured on the receipt automatically.

Remote-first delivery

Send a branded PDF or a hosted link a client can open and approve from anywhere — no in-person signature needed.

Per-line VAT

Set a VAT rate per line item, with net, VAT, and gross shown clearly whatever currency the invoice is in.

Accountant-ready export

Export invoices, receipts, and withheld amounts in one click, instead of reconstructing a quarter from memory.

Invoicing IT and digital services work, in practice

Invoice software for IT & digital services has to fit a workflow that rarely looks like a single flat sale: a project gets scoped, quoted, agreed, and only then invoiced — often for a client sitting in a different country and currency entirely. Send a quote for the scope of work, and the moment a client approves it, convert it into an invoice in one click, with the same line items carrying over so nothing gets retyped and nothing drifts between what was agreed and what gets billed.

A client based in the US or Europe expects to pay in their own currency, not to convert your invoice themselves before approving it. Set the currency per client, and issue every quote and invoice in dollars, euros, or whatever they actually pay in — your dashboard still rolls everything back into your home currency, so a month of clients across three currencies still adds up to one number you trust rather than three you have to reconcile by hand.

Thai B2B clients often withhold 3% at source before paying a services invoice, and if that withheld amount isn't tracked anywhere, your records never quite match what actually hit your account. Flag a client as subject to withholding tax, and the amount they withhold is captured on the receipt automatically the moment they pay — so a paid total that's short by 3% has an obvious, recorded reason, instead of becoming a mystery gap you chase down manually every month. The certificate and any filing with the Revenue Department stay with your client and your accountant, exactly as they already handle it today; the receipt just keeps the withheld amount on record so your own numbers reconcile.

Because the work is remote from the first conversation to the final payment, delivery has to be too — a client should be able to open a quote or invoice from a link and approve or pay it without downloading anything or creating an account first. If a project's scope shifts after you've already invoiced it, issue a credit note against the original rather than editing it quietly, so the full history — quote, invoice, correction — stays traceable the day a client's finance team asks for it, and export the whole thing in one click when it's time to hand records to your accountant.

Ready to send your next project quote to a client anywhere?

Questions, answered

Can I invoice foreign clients in USD or EUR?+

Yes. Set the currency per client or per document, and your dashboard still consolidates every invoice back into your home currency for reporting.

How does withholding tax work for Thai clients?+

Flag a client as subject to withholding tax, and when they pay, the amount they withheld is recorded on the receipt — so what actually lands in your account reconciles against what you invoiced, without you tracking the gap by hand.

Does Lemon Invoice issue a withholding tax certificate or file it with the Revenue Department?+

No. It tracks the withheld amount on the receipt so your numbers reconcile — the certificate and any filing stay with your client and your accountant, the way they already handle it.

Can I send a quote before invoicing a project?+

Yes. Scope the work as a quote, and once the client approves it, convert it into an invoice in one click — the line items carry over without retyping.

Do clients need an account to review or pay an invoice?+

No. Share a hosted link or send a branded PDF — a client can review and approve it remotely without creating an account.

What does invoice software for IT and digital services cost?+

There's a free plan covering quotes, invoices, and payment tracking, so you can run real client work before deciding whether to upgrade. Paid plans raise your client and document limits as you grow.

What if scope changes after I've already invoiced a project?+

Issue a credit note against the original invoice rather than editing it after the fact. It keeps your numbering intact and gives a clear record of what changed, which matters more once a client's finance team starts asking questions.

More solutions

Quote it, invoice it, reconcile it — wherever your client is.