Master10
Banking & Financial Awareness20 Concepts & Facts

CASA Ratio GK Facts, Overview & Study Guide

Reviewed by the Master10 Editorial Board for accuracy, clarity and competitive-exam relevance.Editorial Policy
The CASA ratio, standing for Current Account and Savings Account ratio, is a primary financial metric in commercial banking that reflects the proportion of a bank's total deposit base held in current accounts and savings accounts. Expressed mathematically as total CASA deposits divided by aggregate deposits multiplied by one hundred, this indicator reveals the structural composition of a financial institution's deposit liabilities. Commercial banks mobilize funds through two fundamental liability channels: low-cost demand deposits (CASA) and higher-cost term or time deposits (such as fixed deposits and recurring deposits). Because current accounts earn zero interest and savings accounts yield comparatively low, regulated or market-benchmarked interest rates, a high CASA ratio provides commercial banks with an inexpensive, stable source of operating capital.

The operational significance of the CASA ratio directly influences a commercial bank's profitability, cost of funds, and Net Interest Margin. The Net Interest Margin represents the difference between the interest income earned on advances, loans, and statutory government securities investments and the interest expenditure paid out to depositors. When a commercial bank maintains a high CASA ratio—frequently exceeding forty percent among top Indian public and private sector banks—its blended cost of funds decreases substantially, giving the institution competitive pricing power to issue consumer and corporate loans at competitive lending rates while preserving healthy operational spreads. Conversely, banks with low CASA ratios must rely heavily on high-cost wholesale certificates of deposit or retail fixed deposits, which depresses operational profitability during competitive lending environments.

For banking supervisors, financial equity analysts, and competitive examination candidates, tracking the CASA ratio provides essential insight into retail franchise strength and asset-liability management. In India, deposits mobilized through current and savings accounts constitute Demand Liabilities under Section 42 of the Reserve Bank of India Act, 1934, directly impacting the calculation of Net Demand and Time Liabilities used to compute Cash Reserve Ratio and Statutory Liquidity Ratio mandates. In addition, because demand deposits are subject to immediate withdrawal upon depositor demand, banks balance CASA mobilization with sound liquidity risk management to avoid structural asset-liability maturity mismatches across changing interest rate cycles.

Key Concepts & Self-Assessment20 Key Facts

Review key CASA Ratio: Current and Savings Account in Banking Operations exam facts and rate your mastery to track revision.

Progress: 0/20 Rated 0 Mastered 0 Review Later
#1
The CASA ratio measures the proportion of a bank’s total deposits held in Current Accounts and Savings Accounts.
#2
The mathematical formula is: CASA Ratio = (Current Account Deposits + Savings Account Deposits) / Total Deposits × 100.
#3
Current accounts are non-interest-bearing transactional accounts designed for traders, businesses, and corporate commercial entities.
#4
Current accounts offer unlimited transaction frequency, cheque facilities, and overdraft limits, but yield zero interest to account holders.
#5
Savings accounts are retail deposit accounts designed for individual savers, offering modest interest alongside restricted monthly withdrawals.
#6
CASA deposits are classified legally as Demand Deposits because banks are contractually obligated to repay them on demand.
#7
Time deposits (fixed deposits and recurring deposits) pay significantly higher interest rates and mature on predetermined dates.
#8
A higher CASA ratio reduces a commercial bank’s overall cost of funds, directly improving its Net Interest Margin (NIM).
#9
Net Interest Margin is calculated as Net Interest Income (interest earned minus interest expended) divided by average earning assets.
#10
Leading Indian commercial banks, including State Bank of India and major private lenders, typically maintain CASA ratios between 40 and 45 percent.
#11
Deposits in Indian banks are insured up to ₹5 lakh per depositor per bank by the Deposit Insurance and Credit Guarantee Corporation (DICGC).
#12
CASA deposits constitute Demand Liabilities under Section 42 of the Reserve Bank of India Act, 1934.
#13
Net Demand and Time Liabilities (NDTL) form the statutory base for calculating the Cash Reserve Ratio (CRR) and Statutory Liquidity Ratio (SLR).
#14
The Reserve Bank of India completely deregulated interest rates on domestic savings bank deposits in October 2011, allowing commercial banks to set rates.
#15
High CASA ratios indicate strong customer brand loyalty, broad branch networks, and efficient retail digital banking platforms.
#16
During economic cycles of rising benchmark interest rates, banks with high CASA ratios experience less margin compression than wholesale-funded banks.
#17
CASA deposits pose potential liquidity run risks because depositors can withdraw funds instantly without contractual penalties.
#18
Banks utilize Asset-Liability Management (ALM) frameworks to match short-term demand liabilities with appropriate short-to-medium-term asset loans.
#19
The Pradhan Mantri Jan Dhan Yojana (PMJDY) expanded national savings account penetration, bringing millions of unbanked citizens into formal CASA networks.
#20
Wholesale bulk deposits from institutional treasuries represent the primary alternative funding channel when retail CASA mobilization slows.

Subject Specialist Commentary

Analytical perspective & practical exam advice from the Master10 academic board

Educator's Insight
The CASA ratio measures the proportion of a commercial bank's total customer deposits held in Current and Savings accounts. Because current accounts pay zero interest and savings accounts offer very low interest rates, these funds represent the cheapest money a bank can source. When a bank maintains a healthy share of low-cost deposits, it spends less on interest payments to depositors. Consequently, it earns superior profit margins when lending those funds to business borrowers and home buyers.
In UPSC and banking recruitment papers, questions frequently connect CASA ratios directly to Net Interest Margin. Remember that higher CASA translates to lower cost of funds and wider profit spreads. A recurring prelims trap confuses demand deposits with time deposits: CASA balances are demand deposits withdrawable anytime, unlike fixed deposits which carry lock-in periods and higher interest burdens. Use the memory hook "CASA equals Low Cost" to remember why leading Indian lenders aim for ratios above 40 percent.

Related Knowledge Topics to Discover

Looking for more GK practice?

Explore 52,789+ questions across 65 General Knowledge categories.

Open Interactive Search