Connect Zignature to QuickBooks Online and send invoices, estimates, and contracts for e-signature in seconds. Signed copies sync back to QuickBooks automatically — no manual uploads.
Pull any QuickBooks invoice or estimate into a Zignature document and collect a legally binding signature from your customer.
Once signed, the completed document and audit trail are automatically attached to the corresponding QuickBooks record.
Customer name, email, and billing details pulled from QuickBooks automatically populate your document template — zero re-typing.
Every signature event — opened, signed, declined — is timestamped and stored in a court-admissible audit certificate alongside your QuickBooks records.
Customers sign and pay in one flow. Combine e-signature with payment collection to close the loop from approved estimate to paid invoice.
Signatures are fully compliant with the U.S. ESIGN Act and UETA — legally binding and accepted everywhere QuickBooks is used.
Authorize Zignature to access your QuickBooks Online account via secure OAuth in under 60 seconds.
Choose an invoice or estimate, add signature fields with AI assistance, and send to your customer — all in minutes.
Your customer signs on any device. The completed document attaches to QuickBooks automatically — no manual step.
Yes. Zignature connects to QuickBooks Online via a secure OAuth integration. You can authorize the connection in under a minute from your Zignature integrations settings page.
Absolutely. Once connected, you can pull any invoice or estimate from QuickBooks into a Zignature document template. Customer details auto-fill, you place signature fields, and send — the whole process takes under two minutes.
Yes. Signatures collected through Zignature comply with the U.S. ESIGN Act and UETA, making them legally binding nationwide. Every signature includes a timestamped audit certificate.
The native integration targets QuickBooks Online. For QuickBooks Desktop, you can still use Zignature via our Zapier integration to trigger signature workflows from QB Desktop exports.
Most accounting teams are live in under 15 minutes. No IT department required.
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Plumbers, HVAC, landscapers, and consultants send estimates from QuickBooks and collect customer approval signatures before starting work — protecting against scope disputes.
CPA firms send engagement letters, service agreements, and authorization forms linked directly to QuickBooks client records — audit-trail included.
Construction firms turn QuickBooks project estimates into signed change orders and lien waivers — with field-collected signatures on mobile devices at the job site.
Software companies attach signed order forms and subscription agreements to QuickBooks invoices — keeping revenue recognition paperwork in one place.
Get your first invoice signed in under five minutes. No developer required.
Go to Zignature Integrations → QuickBooks → Authorize. OAuth handles authentication securely — no passwords shared.
Browse your QuickBooks invoices, estimates, or purchase orders. Select any document — Zignature pulls it in automatically.
AI auto-detects where signatures should go. Drag, drop, and customize fields. Add date fields, initials, or text inputs in seconds.
Customer signs on any device. The completed, signed PDF automatically attaches to the QuickBooks record — no manual upload needed.
Zignature unlocks capabilities that QuickBooks' built-in tools simply don't offer.
| Capability | Zignature + QuickBooks | QuickBooks Alone |
|---|---|---|
| Send invoices for e-signature | ✓ | ✗ |
| Tamper-proof audit trail | ✓ | ✗ |
| Auto-attach signed PDF to QB record | ✓ | ✗ |
| Customer signs without creating account | ✓ | ✗ |
| ESIGN & UETA compliant signatures | ✓ | ✗ |
| Automated signing reminders | ✓ | ✗ |
| Custom branding on signing page | ✓ | ✗ |
| Multi-party signing workflows | ✓ | ✗ |
CPA firms use Zignature to send engagement letters, 8879 authorization forms, and consulting agreements directly linked to QuickBooks client records. The complete audit trail satisfies IRS requirements for electronic authorization. Firms report collecting signatures up to 80% faster than fax or mail — and no more chasing clients for wet signatures during tax season.
HVAC companies, plumbers, electricians, and landscapers generate estimates in QuickBooks then collect customer sign-off before starting work — eliminating scope disputes and "I never agreed to that" arguments. Technicians collect signatures on a tablet at the job site, and the signed document syncs back to QuickBooks before they leave the driveway.
Consultants, agencies, and law firms use QuickBooks for billing and Zignature for agreements. Client onboarding that once took 3–5 days of email back-and-forth now completes in hours. Monthly retainer renewals, scope-of-work addendums, and change orders go out automatically, signed, and filed — all linked to the QuickBooks project record.
QuickBooks does not offer native e-signature functionality. While QuickBooks allows you to email invoices as PDFs, there is no built-in mechanism for collecting a legally binding electronic signature. Integrations like Zignature fill this gap, allowing you to send any QuickBooks document for signature and receive a compliant signed copy back — all without leaving your workflow.
Yes — when collected through a compliant platform like Zignature. The U.S. ESIGN Act and UETA establish that electronic signatures are legally equivalent to handwritten signatures for commercial agreements, including invoices, estimates, service agreements, and contracts. Zignature captures a complete audit trail including signer identity, IP address, timestamp, and geolocation — making signatures court-admissible.
Yes. Once a recipient completes signing, Zignature automatically attaches the completed, certified PDF back to the corresponding QuickBooks record — whether that's an invoice, estimate, customer record, or project. You never need to manually download and re-upload signed documents. The sync happens in real time via the QuickBooks API.
No. Your customers click a signing link in their email and sign directly in their browser — no account, no app download, no friction. The signing experience is mobile-optimized and works on any device. You can optionally add identity verification (SMS code, ID check) for sensitive documents.
Any QuickBooks document that exports as a PDF can be sent for signature — invoices, estimates, purchase orders, statements, sales receipts, credit memos, and custom forms. You can also upload external documents (service agreements, NDAs, work orders) and link them to QuickBooks records manually.
Zignature offers a free plan that includes 5 documents per month — enough for most small businesses to get started. Paid plans start at a low monthly rate and include unlimited documents, unlimited templates, CRM integrations, and priority support. Compare this to standalone e-signature tools, which charge $15–$40/month per user for similar features without QuickBooks integration.
Zignature's direct sync integration is built for QuickBooks Online. QuickBooks Desktop users can still use Zignature by exporting documents as PDFs, uploading them to Zignature, and filing the signed copies back manually. A deeper QuickBooks Desktop integration is on the product roadmap.
DocuSign offers a QuickBooks integration, but it starts at $25/month per user with per-envelope pricing that adds up fast. Zignature offers the same core e-signature functionality plus AI field detection, white-label branding, CRM integrations, and an embeddable API — at a fraction of DocuSign's cost. For QuickBooks users sending more than 10 documents per month, Zignature typically saves hundreds of dollars annually.
Zignature offers a HIPAA BAA (Business Associate Agreement) add-on for healthcare businesses that use QuickBooks for billing and need e-signatures on patient-related documents. With the HIPAA BAA in place, Zignature can be used for patient intake forms, consent forms, and service agreements — keeping your workflow compliant under HIPAA.
Yes. Zignature's bulk send feature allows you to send the same document template to hundreds of customers simultaneously, each getting a personalized signing experience with their details pre-filled from QuickBooks. This is particularly useful for annual contract renewals, policy updates, or rate change notices sent to your entire customer base.
Free plan. No credit card. Connect QuickBooks in 60 seconds and send your first document for signature.