Invoice software for manufacturers

Lock in specs and price with an order confirmation before anything ships, apply VAT correctly whether the order's domestic or export, and keep withholding tax from Thai B2B customers reconciled on the receipt.

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The problems you actually have

A quote isn't a commitment

A buyer expects a quote, then a formal order confirmation locking in specs, quantities, and price before anything gets committed to. Invoice off the quote alone and there's no document on record for what was actually agreed.

One order, invoiced in stages

A large OEM order rarely ships in one go — it goes out in batches, and each batch needs its own invoice that still ties back to the same customer and the same confirmed order, not a fresh document with no history behind it.

Domestic and export orders on the same books

One customer orders domestically at the standard VAT rate, another buys for export at zero-rated VAT — mix the two up on the same invoice and your VAT records stop matching what actually shipped.

Withholding tax that doesn't add up on its own

A Thai B2B customer withholds 3% before paying a manufacturing invoice, and if nothing records that gap, a 'paid' total that's a few percent short turns into a manual reconciliation every time.

Quote, confirm, invoice, receipt — one thread from order to payment

Lemon Invoice lets you send a quote, lock it in with a formal order confirmation, and convert that into an invoice once the order ships — with the same specs, quantities, and pricing carried through every step. Apply VAT per line for domestic and export orders alike, invoice export orders in the buyer's currency, and flag customers who withhold tax so the amount withheld is recorded on the receipt automatically.

How it works

1

Create your free account

Sign up with your email and your workspace is ready within a minute — no credit card, and nothing to install before you can send your first order confirmation.

2

Add your business and customers

Set up your business profile once, then add each customer — flagging any Thai B2B buyer who withholds tax at source, so it's already set before you invoice them. Import an existing customer list from a spreadsheet instead of retyping every record.

3

Send a quote, confirm the order, invoice it

Send a quote, convert it into an order confirmation once the buyer agrees, and invoice it — in the buyer's currency if it's an export order, with VAT set per line. Issue a receipt the moment payment lands, and if the customer withholds tax, the withheld amount shows on the receipt automatically.

What you get

Order confirmations before you invoice

Lock in specs, quantities, and price with a formal order confirmation, then convert it into an invoice once the order ships — nothing retyped.

Per-line VAT, domestic and export

Set a VAT rate per line item, so a domestic order and an export order each carry the correct rate on the same invoice.

Invoice export orders in the buyer's currency

Bill an overseas OEM customer in USD or EUR while your dashboard still totals everything back into your home currency.

Withholding tax tracked on receipts

Flag a customer as subject to withholding tax, and the amount withheld is captured on the receipt automatically when they pay.

Every order, one traceable record

Invoices, order confirmations, and receipts stay tied to the customer and the order they belong to, so a staged delivery on one order confirmation is a search, not a hunt through separate files.

Accountant-ready export

Export quotes, order confirmations, invoices, and receipts in one click — ready for your accountant, not a reconstruction project.

Invoicing a manufacturing or OEM business, in practice

Invoice software for manufacturers has to account for a step most generic tools skip entirely: a quote isn't a commitment, and an order isn't real until it's confirmed. Send a quote with specs, quantities, and price, and once a buyer agrees, convert it into a formal order confirmation that locks those details in on record — before anything ships, not after. When the order goes out, convert that confirmation into an invoice in one click, with the same line items carrying through so nothing gets retyped and nothing drifts between what was agreed and what gets billed.

Large OEM orders rarely move in one shipment — they go out in batches, and each batch needs its own invoice that still ties back to the same customer and the same confirmed order rather than starting from a blank document with no history behind it. Because every quote, order confirmation, invoice, and receipt stays tied to the customer and the order it belongs to, tracing a staged delivery back to what was originally agreed is a search, not a hunt through separate files or a shared spreadsheet.

A single customer list can include buyers ordering domestically at the standard VAT rate alongside overseas buyers ordering for export at zero-rated VAT, and getting that split wrong on the same invoice is how VAT records stop matching what actually shipped. Set the rate per line item instead of per invoice, so a mixed order totals correctly regardless of which lines are domestic and which are export, and invoice the export lines in the buyer's own currency — USD, EUR, or whatever the deal is priced in — while your dashboard still consolidates everything back into your home currency for reporting.

Thai B2B customers commonly withhold 3% at source before paying a manufacturing invoice, and without something tracking that gap, a paid total that's a few percent short becomes a mystery you chase down by hand every month. Flag a customer as subject to withholding tax, and the amount they withhold is captured on the receipt automatically the moment they pay — the certificate and any filing with the Revenue Department stay with your customer and your accountant, exactly as they already handle it. None of this extends into inventory, bill of materials, or production scheduling — Lemon Invoice covers the commercial documents: quotes, order confirmations, invoices, receipts, and credit notes, each numbered automatically and exportable in one click when it's time to hand records to your accountant.

Ready to confirm your next order before you invoice it?

Questions, answered

Can I send an order confirmation before invoicing a customer?+

Yes. Send a quote, convert it into a formal order confirmation once the buyer agrees to specs, quantities, and price, and convert that into an invoice once the order ships — the same line items carry through each step.

Does it handle VAT differently for domestic and export orders?+

Yes. Set a VAT rate per line item, so a domestic order at the standard rate and an export order at zero-rated VAT can sit correctly on the same invoice, with net, VAT, and gross totals broken out clearly.

Can I invoice an overseas OEM customer in their own currency?+

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

How does withholding tax work for Thai B2B customers?+

Flag a customer as subject to withholding tax, and when they pay, the amount withheld is recorded on the receipt — so a paid total that's a few percent short of the invoice has a clear, recorded reason instead of becoming a manual reconciliation.

Does Lemon Invoice manage inventory or production scheduling?+

No. It handles the commercial side — quotes, order confirmations, invoices, receipts, and credit notes. Inventory, bill of materials, and production scheduling stay with whatever system already runs your shop floor.

What does invoice software for manufacturers cost?+

There's a free plan covering quotes, order confirmations, invoices, and payment tracking, with a limited customer and document allowance so you can run real orders before deciding whether to upgrade. Paid plans raise those limits as your order volume grows.

What if an order needs correcting after it's already been invoiced?+

Issue a credit note against the original invoice rather than editing it directly. It keeps your numbering intact and leaves a clear, document-by-document record of what changed.

More solutions

Quote it. Confirm it. Invoice it. Get paid.