OLO BOOK BUSINESS LIBRARY

Practical knowledge for a better-run business.

Buying guides and clear workflows for billing, inventory, payments, staff and profit—written for Indian small-business owners.

Buying guide · 8 min read

Best Billing Software for Small Business in India: What to Check

A practical checklist for choosing affordable Android billing software for an Indian small business, including inventory, payments, payroll and offline use.

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Staff & payroll · 7 min read

Android Billing App with Staff Attendance and Payroll

Learn how billing, employee attendance, salary advances, payroll settlement and payslips can work together for a small business.

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Mobile shops · 9 min read

Mobile Shop Billing with IMEI Inventory: Complete Workflow

Understand how a mobile shop can record purchases, IMEI-wise stock, accessories, sales, customer payments and profit inputs.

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Buying guide · 7 min read

Offline vs Cloud Billing Software: Which Is Better for Your Shop?

Compare offline-first and cloud billing software for internet dependency, device access, backups, collaboration and daily reliability.

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Billing basics · 6 min read

GST Invoice vs Bill of Supply: Practical Difference

Understand the basic difference between a GST tax invoice and bill of supply, and why business registration and transaction type matter.

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Billing basics · 6 min read

When Should a Business Use a Delivery Challan?

A practical overview of delivery challan workflows, numbering and the difference between goods movement and a completed sale.

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Payments · 6 min read

How to Track Pending, Cleared, Bounced and Cancelled Cheques

Track cheque receipts and payments without overstating available bank balance or losing the outcome history.

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Accounting basics · 7 min read

Petty Cash and Expense Management for Small Business

Learn how to record small expenses, payment sources and cash reconciliation for more realistic profit reporting.

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Payments · 7 min read

How to Track Customer Outstanding and Partial Payments

A simple workflow for credit sales, partial collections, payment allocation and customer ledger review.

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Staff & payroll · 8 min read

Salary Advance, Adjustment and Payslip: Complete Small-Team Flow

Follow employee attendance, salary advances, adjustments, settlement and payslip generation in a transparent monthly process.

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Profit & reports · 8 min read

How to Calculate Profit on Product and Service Bills

Understand service revenue, outsourced service cost, product cost and expenses when reviewing real business profit.

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Inventory · 7 min read

Barcode vs Serial Number vs IMEI: What Should a Shop Track?

Compare product barcodes, unique serial numbers and handset IMEI identifiers for accurate billing and inventory.

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