GST invoice software for services

Create GST invoices
for the services you provide.

Use saved services, SAC details and customer information to create branded invoices that can be downloaded, printed or shared.

For consultants, agencies, repair services, clinics and professional businesses across India.
Service invoicePDF READY
Service codeSAC 9983Billing unitProject
Professional fee₹23,600
Saved service catalogueSAC & service GSTBranded invoice PDFsService sales reports

Professional service billing

The invoice should show what work was provided and how tax was applied.

Fast Invoicing keeps service descriptions, prices, units, SAC codes and GST rates ready for future invoices.

Customer details and GSTIN can be saved for repeat B2B billing, while GSTIN remains optional when the customer does not have one.

Review each draft before finalising it, then create a PDF using the business logo and selected invoice design.

Made for service teams

Clear inputs.
Credible output.

01 / DESCRIBE

Save the services you sell

Keep clear descriptions, SAC codes, units, prices and applicable tax ready for recurring services.

02 / PRESENT

Send a professional document

Add your logo, choose an invoice design and provide a clean PDF or protected sharing link to the customer.

03 / REVIEW

See service sales by period

Review finalized invoices by customer, service, operator, status and selected business period.

Who can use service invoicing software?

A focused invoicing system can support many service-led businesses, including consultants, creative and digital agencies, repair centres, clinics, trainers, contractors and professional firms. The common requirement is a clear sales invoice rather than inventory or complex bookkeeping.

What belongs on a GST service invoice?

The exact requirements depend on the business and transaction, but the working invoice commonly needs:

  • Supplier and customer details
  • Customer GSTIN when applicable
  • A clear description of the service
  • The relevant SAC code and GST rate
  • Value, discount and taxable amount
  • Place of supply and appropriate CGST/SGST or IGST treatment
  • Invoice number and date after finalization

Fast Invoicing places these elements into a consistent workflow. Businesses should confirm their own tax treatment and invoice obligations with a qualified professional.

Better repeat billing without copying old documents

Reusing an old word-processing file is quick until customer details, tax rates or totals are accidentally carried forward. A structured service catalogue and customer list make repeat billing faster while ensuring that each invoice is built from the current information.

Share an invoice while protecting customer access

Invoices can be downloaded directly as PDFs or shared using a private link. For a shared invoice, the customer verifies the last four digits of their mobile number before viewing it, and the link expires after 72 hours.

Reporting for service businesses

Operational reports can show the value of finalized invoices, discounts, taxable sales and GST across a chosen period. Customer- and service-level views help the business understand what it invoiced without claiming to replace formal accounting or payment reconciliation.

Service billing questions

What to know before starting.

Can I save services for repeat invoices?

Yes. Services can be stored with descriptions, prices, units, SAC codes and applicable GST rates.

Can I invoice clients in another state?

Yes. Place of supply supports IGST treatment for interstate sales where applicable.

Can my client receive the invoice on WhatsApp?

The product can share a private, expiring invoice link through WhatsApp or SMS, with customer verification before access.

Does it track whether a client has paid?

Fast Invoicing focuses on sales invoices and operational reports. It is not currently a payment-reconciliation or bookkeeping system.

Open the product

Professional GST invoicing for service businesses in India.

Visit Fast Invoicing