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BANKERS TUTORIAL · DBF · TOPIC & REVISION GUIDE

Topic guide: What a commercial bank does

Commercial banks combine deposit relationships, lending, payment services and financial record keeping. Understanding these functions helps a beginner separate customer convenience, income generation, liquidity needs and the bank's continuing obligations.

01 / 03Learn with a clear direction

2 min read Original learning material · Prepared 14 Oct 2026

This is an independent topic guide, not the official syllabus. Compare it with the current paper outline and rules published by the examination authority.

01 / UNDERSTANDING

Learning objectives

Study deposits, advances, investments, payments and service income as connected functions. Aim to explain the bank's position and the customer's position for each everyday branch interaction. Use a service-to-balance-sheet table to connect branch activity with assets, liabilities, income and expense. A customer deposit and a service fee may both bring cash into the branch, but they create different accounting consequences and management responsibilities.

02 / UNDERSTANDING

The concept in context

A bank accepts eligible deposits and deploys funds through loans, investments and other permitted activities. Interest income is only one part of the business model. Fees may arise from services, while funding, staff, technology and credit losses consume resources.

03 / UNDERSTANDING

A worked learning case

A training branch receives deposits, processes salary payments and finances a shop's equipment. Its manager cannot judge success only from the amount lent. The review also considers repayment quality, service costs, customer complaints and the availability of funds when depositors request withdrawals under their account terms.

ORIGINAL EDUCATIONAL PRACTICE

Try it before you check.

Does higher lending automatically mean better bank performance?

Show the answer and reasoning

No.

Lending volume says little about pricing, collection quality, funding cost or operating expense. A larger loan book can increase income while also increasing expected losses and cash-flow demands. Assess the quality and sustainability of growth alongside its amount, rather than treating activity as a complete performance measure.

Two traps to watch for.

  • Calling all customer receipts bank income.
  • Ignoring withdrawal obligations when discussing lending growth.

YOUR TOPIC-SPECIFIC LEARNING MAP

Your revision map

  1. List four functions performed in the training branch.

  2. Separate revenue items from customer funds held as liabilities.

  3. Explain why loan profitability and immediate liquidity differ.

Explain the idea, apply it to a new situation, then check what changed in your reasoning.

BANKERS TUTORIAL · SOURCE NOTES

Keep the source alongside your notes.

Official links provide subject context and authoritative reference material. This guide’s explanation, scenario and question are original Bankers Tutorial learning content.

  1. iibf.org.in https://iibf.org.in/diploma-banking-finance
  2. www.iibf.org.in https://www.iibf.org.in/documents/RulesSyllabus/2026/42_DBF-Final_23_2_26%20_Final_website_12_03_2026.pdf
  3. www.rbi.org.in https://www.rbi.org.in/scripts/NotificationUser.aspx?Id=7680

For DBF preparation, check the current official notice before relying on changing dates, rules or examination requirements.

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