Get Signed Approval Directly on the Invoice
Collect a client’s signature right on the invoice itself formal sign-off for contracts, deliverables, or high-value orders, before payment is considered final.
What Are Invoice Signatures?
Invoice signatures let a client formally approve an invoice by signing it directly, instead of just paying it. This documents sign-off for work that needs it contracts, deliverables, or high-value orders before the transaction is considered final. BillNama collects the signature on the invoice itself, so approval and billing live in the same document.
Signature vs. online payment: a payment link lets a client pay an invoice; a signature lets a client approve it. Some businesses need both sign-off before delivery, then payment after.
Everything Sign-Off Needs
Get documented approval without a separate contract tool or a printed page to chase down.
Signature Directly on the Invoice
No separate document — your client signs the same invoice they’re reviewing.
Documented Approval
A signed invoice records clear, dated sign-off from your client on what was agreed.
Mobile & Desktop Signing
Clients can sign from a phone, tablet, or desktop — wherever the invoice reaches them.
Signed Copy Stored With the Invoice
The signature stays attached to the invoice record, so you’re never hunting for proof.
Works Across Document Types
Collect sign-off on standard invoices as well as invoices converted from quotes.
Included on Paid Plans
Invoice Signatures is available as part of BillNama’s paid plans.
Getting Sign-Off in 3 Steps
Send the Invoice
Create and send the invoice the same way you normally would.
Client Signs Online
Your client reviews the invoice and signs it directly, from any device.
Signed Copy Saved Automatically
The signature is stored with the invoice, so approval is always on record.
Built for Work That Needs Sign-Off Before Payment
Contractors
Get client sign-off on completed work before invoicing for the final payment.
Agencies
Collect formal approval on deliverables before closing out a project invoice.
Consultants
Document sign-off on an engagement’s terms directly on the invoice.
Manufacturers & B2B Suppliers
Get formal order acceptance recorded before fulfilling a large order.
More Than Signatures — Run Your Whole Billing Cycle
Invoice Signatures connects directly to the rest of BillNama, so approval, billing, and payment all live under the same customer record.
Recurring InvoicesDocument approval on a recurring billing setup
Quotations & EstimatesGet sign-off on the quote before converting it
Proforma InvoicesFormalize order confirmation with a signature
ExpensesTrack costs tied to signed-off work
Customer LedgerSee signed invoices alongside a client’s balance
Reports & EarningsTrack signed vs. unsigned invoices over time
Multi-Currency InvoicesGet sign-off on international invoices too
Send Invoice on WhatsAppSend an invoice for signature where clients reply
US Sales Tax InvoicesGet sign-off on state-correct tax invoices
VAT InvoiceGet sign-off on VAT-compliant invoices
GST InvoicesGet sign-off on GST-compliant invoices
Why Add Signatures to Your Invoices
- Documented approval on record, not a verbal or emailed “okay”
- Sign-off happens on the same invoice, not a separate contract tool
- Works from any device your client happens to be on
- Included on BillNama’s paid plans, alongside team access and advanced reporting
Frequently Asked Questions
What are invoice signatures?
Invoice signatures let a client formally approve an invoice by signing it directly on the document, documenting sign-off before the transaction is considered final.
How does a client sign an invoice in BillNama?
The client opens the invoice and signs it directly from their phone, tablet, or desktop — no separate app or printed page required.
Is a signed invoice legally binding?
A signature on a BillNama invoice documents clear, dated approval from your client. Legal enforceability can vary by jurisdiction and situation, so for contracts with specific legal requirements, check with your own legal advisor.
Is Invoice Signatures included on the free plan?
No. Invoice Signatures is available on BillNama’s paid plans. The free forever plan covers standard invoicing without the signature feature.
Can I see a history of who signed and when?
Yes. The signature is stored with the invoice record, along with when it was signed.
Does the signature feature work on mobile?
Yes. Clients can sign an invoice from a phone or tablet as easily as from a desktop.
Can I require a signature before a client pays?
Yes. You can use signatures as a sign-off step ahead of collecting payment on the same invoice.
Can I get a signature on an invoice converted from a quote?
Yes. Once a quote or proforma invoice converts to a standard invoice, you can still collect a signature on it the same way.
Which BillNama plan includes Invoice Signatures?
Invoice Signatures is included on BillNama’s paid plans — see the Pricing page for exact plan details and current rates.
Can I download or export a signed invoice as a PDF?
Yes. A signed invoice can be downloaded as a PDF with the signature included, the same as any other invoice.
Ready to Get Signed Approval on Every Invoice?
Join 38,000+ businesses using BillNama to bill, get sign-off, and get paid with confidence.