GST invoicing software for service businesses
Create GST-ready invoices in minutes, get paid faster with dynamic UPI QR codes and Razorpay links, and send automatic payment reminders on WhatsApp.
“CoreBase GST Invoicing is modern billing software tailored specifically for service businesses, consultants, and agencies. It generates professional, compliant GST invoices with automated tax splitting, embeds dynamic UPI QR codes and Razorpay links for one-tap payments, and tracks overdue accounts receivable automatically.”
Invoices in spreadsheets make getting paid slow and messy
Service businesses often bill clients using Word documents or spreadsheets, paste bank account details manually, and spend days chasing overdue payments on phone calls.
Slow Payment Friction
Clients delay payment when forced to manually enter 16-digit bank account numbers and IFSC codes for NEFT/IMPS.
Awkward Follow-Up Chasing
Executives hate reminding clients about unpaid fees manually, leading to ballooning accounts receivable and cash flow crunches.
GST Calculation Errors
Manual tax splits between CGST, SGST, and IGST lead to reconciliation headaches during quarterly GST return filings.
Everything you need to invoice clients and collect payment
Accelerate your cash flow with invoices designed for instant electronic settlement.
Compliant GST Invoicing & SAC Coding
Generate clean, branded PDF invoices with automated tax calculation (CGST/SGST for intra-state, IGST for inter-state) and standardized SAC service codes.
Dynamic UPI QR Code on Every Invoice
Every invoice renders a dynamic UPI QR code pre-filled with the exact amount and invoice reference. Clients scan and pay in seconds using GPay, PhonePe, or Paytm.
Razorpay Instant Payment Links
Clients can pay via Credit/Debit Cards, Net Banking, or EMI through integrated Razorpay checkout with instant automated payment receipts.
Automated WhatsApp & Email Reminders
Schedule respectful, automated payment reminder nudges before due dates and on overdue invoices with a single-tap payment link.
Real-Time Receivables Aging View
Monitor outstanding payments grouped by 0-30 days, 31-60 days, and 60+ days overdue so you always know where your working capital stands.
1-Click PDF Download & Audit History
Download professional tax-compliant PDF invoices or share them directly via WhatsApp and email with complete client delivery logs.
From customer to cash in one system
Invoicing in CoreBase isn't an isolated silo; it connects straight to your CRM and client workflows.
Lead-to-Invoice Conversion
Generate an invoice directly from a converted lead in CoreBase CRM with auto-populated client details.
Secure Document Vault
Deliver tax invoices, receipts, and deliverables into the client's private document portal automatically.
Billable Time Tracking
Pull verified team work hours from CoreBase HRMS directly into client invoices for transparent billing.
Built for businesses that bill for services
Start invoicing in three simple steps
Add your firm details & GSTIN
Upload your company logo, set your GSTIN and bank details, and customize your invoice prefix and payment terms.
Create your invoice
Select a client, add line items with SAC codes, and review the automatic CGST/SGST or IGST tax computation.
Share & get paid instantly
Send the invoice link via WhatsApp or email. The client scans the dynamic UPI QR code or pays via card, automatically updating your ledger.
Compliant, auditable, and bank-grade security
GST Rule Conformance
Invoices support mandatory GST rules including Place of Supply, HSN/SAC codes, reverse charge flags, and separate tax breakdowns.
Tamper-Evident Numbering
Sequential invoice numbering prevents missing records and ensures compliance during statutory audits.
Direct Payment Settlement
UPI and card payments settle straight into your registered bank account via Razorpay with zero CoreBase escrow withholding.
Common Questions About Billing & Payments
Get paid faster with modern GST invoicing
Join hundreds of Indian service firms speeding up collections with CoreBase Invoicing.