Unified Invoicing • Gun Apps Family

BillGun: 1-Click Invoicing from Any CRM Contact

Don't waste time re-entering customer details into separate invoicing software. With CRMGun and BillGun, you can transition from verbal agreement to tax-compliant invoice in one click.

Zero Retyping Real-time Balance Sync Clean PDF Invoices
1-Click Invoice Flow
INVOICE #INV-2026-0042

Apex Solutions Inc.

Auto-Filled from CRM
Web Design & Architecture (40 hrs) $3,600.00
Payment Received $3,600.00
CRM Status: Customer • Balance Due: $0.00

Invoices paid by clients automatically update contact totals in CRMGun.

Integration Benefits

Why CRM and Billing Belong Together

Close deals and collect revenue without friction between sales and finance.

Instant Pre-Fill

Client business name, tax registration number, email, address, and preferred currency load into the bill automatically.

Shareable Links & PDFs

Send invoices via WhatsApp, SMS, or email using secure public links. Clients can view or download branded PDFs anytime.

Lifetime Revenue Metrics

Instantly identify your most valuable customers with aggregate billed and paid totals directly on their CRM profile card.

FAQ

BillGun Invoicing FAQs

Common questions on issuing invoices and tracking payments in CRMGun.

How does 1-click billing work in CRMGun?

From any customer card or deal record in CRMGun, click "Create Invoice" to launch BillGun with the client’s name, email, address, tax ID, and currency pre-filled. Add your line items and send the invoice via email or public link.

Does BillGun update the customer record when they pay?

Yes. When an invoice status changes to Paid or Partial, the customer card in CRMGun updates in real time. Total invoiced amounts and outstanding balances remain completely synchronized.

Can I generate quotations before sending the final invoice?

Yes. You can issue formal quotations and estimates. Once approved by the client, convert them into an active tax invoice with a single click.

Does BillGun support international taxes and currencies?

Yes. BillGun supports USD, INR (GST with state codes), EUR, GBP, AUD, CAD, and regional taxes worldwide including VAT, Sales Tax, and GST.

Get Paid Faster with Integrated Invoicing

Experience 1-click billing from CRM contacts. 7-day free trial on all plans.