GSTR-9 is an annual return that businesses need to file, summarizing all the monthly or quarterly GST returns (sales, purchases, and taxes) filed during the year.

A GST audit is a detailed examination of a taxpayer's GST records, returns, and other documents to verify the accuracy of tax liability, input tax credits, and overall compliance with GST laws, typically conducted under Section 35(5) of the CGST Act.

Bookkeeping of expenses and payments involves systematically recording all business costs and payments made, including purchases, bills, wages, and other operational expenses. This helps in tracking cash flow, managing budgets, and ensuring accurate financial reporting.

Bookkeeping of sales and receipts involves recording all income generated from sales and services, along with tracking customer payments received. This helps in monitoring revenue, managing accounts receivable, and ensuring accurate financial statements.

Monitoring of TDS transactions and expenses involves tracking and recording Tax Deducted at Source (TDS) on payments made and received, ensuring compliance with tax regulations, and timely filing of TDS returns. It helps in maintaining accurate financial records and avoiding penalties.