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StampBook Blog

Practical, plain-language guides on invoicing, getting paid and keeping your books tidy, written for freelancers, shopkeepers and small businesses in India.

GST

What a Valid GST Invoice Must Contain: A Practical Checklist for India

The details a GST tax invoice needs in India, how to number invoices, and the common mistakes small businesses make.

Basics

How to Create a Professional Invoice in 7 Steps (With a Freelancer Example)

A step-by-step guide for freelancers and small businesses on building a clear invoice that gets paid without back-and-forth.

Getting Paid

Invoice Payment Terms Explained: Advance, Net 7, Net 30 and What to Choose

What common payment terms mean, how to pick the right one for your business, and what Indian law says about delayed payments to small suppliers.

Getting Paid

How to Get Paid Faster With UPI: QR Codes, Payment Links and Reminders

Practical ways Indian small businesses can use UPI QR codes and shareable invoice links to shorten the time between invoice and payment.

Basics

Invoice Numbering: Best Practices for Small Businesses and GST Compliance

How to design an invoice number series that is unique, sequential, easy to search and compliant, including financial-year formats.

Getting Paid

How to Follow Up on Overdue Invoices Without Damaging the Relationship

A friendly, step-by-step reminder process with message templates for chasing late payments from clients.

Money Management

Expense Tracking for Small Businesses: A Simple System That Takes 10 Minutes a Week

How freelancers and shop owners can record expenses, separate personal from business spending and prepare cleanly for tax time.

Basics

Quotation, Proforma Invoice, Tax Invoice and Receipt: What Is the Difference?

Understand the four documents every small business uses, when to issue each one and how they fit together.

Business Tips

Billing Habits That Make a Small Business Look Professional (And Earn Trust)

Eight small habits in the way you bill clients that raise trust, reduce disputes and bring repeat business.