GST-ready billing software with tax invoices, reports & inventory. Get easy tax & GST software for small businesses with Sleek Bill—updated April 2024! To make your decision easier, we reviewed dozens of tools based on features, pricing, integrations, scalability, and user feedback. Here’s our list of the Top 6 Billing Software in India for 2025 that are best suited for small and growing businesses. Accuracy in tax compliance begins with the right digital tools. The best billing software in India empowers businesses to manage invoicing, file GST returns, and track finances with precision. Khata Billing is the best free GST billing software . Manage inventory, customize invoices, POS, automate workflows, send estimates & quotations, and generate comprehensive reports.