How to Set Up Professional Billing for Your CA Firm

Most CA firms undercharge, under-bill, or simply forget to bill for work done. The result? Revenue leakage that can amount to 20-30% of a firm's potential income. Setting up a professional billing system isn't just about getting paid — it's about running a sustainable practice.

Service-Based vs Time-Based Billing

Service-based billing charges a fixed fee for each service (GST return filing: ₹1,500, ITR filing: ₹2,000). This is simple and predictable for clients. Time-based billing tracks hours spent and bills at an hourly rate. This is fairer for complex engagements but requires diligent time tracking. Most firms use a hybrid approach — fixed fees for routine compliance and time-based for advisory work.

The Professional Invoice

A professional CA firm invoice should include your firm's GSTIN and PAN, a unique sequential invoice number, detailed description of services rendered, applicable GST (typically 18%), payment terms and bank details, and the digital signature of the partner.

Recurring Billing

For retainer clients, recurring billing automates the monthly or quarterly invoice generation. Set it once, and the system generates invoices automatically — complete with the correct amounts, GST, and payment terms.

Payment Tracking and Reminders

Outstanding receivables are a chronic problem for CA firms. Automated payment reminders, a client-facing payment portal, and a clear ledger showing every invoice and payment help reduce outstanding days significantly.

KaryiQ Practice Billing Module

KaryiQ Practice includes a complete billing suite — invoice creation with GST, recurring invoices, payment recording, credit notes, client ledgers, PDF generation, and email delivery. Every invoice is linked to actual services rendered, making it easy to justify charges to clients.