Overdraft Interest Calculator

About Overdraft (OD) Facility

Overdraft is a credit facility allowing you to withdraw more than your account balance up to a pre-approved limit. Interest is charged only on the utilized amount for actual days used.

Key Features

• Interest Rate: 10% - 15% p.a. (higher than loans, lower than credit cards)
• Interest Calculation: Daily reducing balance (only on utilized amount)
• Repayment: Flexible (no EMI, repay anytime)
• Processing Fee: 0.25% - 1% one-time
• Limit: Based on income, credit score, relationship with bank
• Renewal: Annual (charges apply)

Types of Overdraft

• Salary Account OD: Auto-approved based on salary (2-3x monthly salary)
• Secured OD: Against FD, shares, property (lower rates 8-10%)
• Unsecured OD: Based on creditworthiness (higher rates 12-15%)
• Business OD: For working capital needs (10-14%)

Interest Calculation Method

Daily Reducing Balance:

• Interest = (Outstanding Balance × Rate × Days) ÷ 365
• Calculated daily on end-of-day balance
• If you repay ₹10K today, interest stops on that ₹10K from tomorrow
• Most cost-effective vs loans (interest on reducing balance)

Example Calculation

OD vs Other Credit Options

• OD vs Personal Loan: OD 12% flexible vs Loan 11% fixed EMI; OD better for short-term
• OD vs Credit Card: OD 12% vs CC 36-42%; OD much cheaper
• OD vs Gold Loan: Gold Loan 10% vs OD 12%; Gold cheaper but needs collateral
• OD vs Business Loan: OD 12% flexible vs Loan 13% structured; OD for working capital

Charges & Fees

• Processing Fee: 0.25% - 1% of sanctioned limit (one-time)
• Annual Renewal: ₹500 - ₹2,000/year
• Overutilization: Extra 2-3% penalty if exceed limit
• Late Payment: ₹500 - ₹1,000 if interest not paid on time
• Cheque Bounce: ₹500 - ₹750 per bounce

When to Use Overdraft?

• ✅ Short-term cash flow mismatch (salary delayed, invoice pending)
• ✅ Emergency expenses (medical, repairs)
• ✅ Business working capital (pay suppliers, bridge gap)
• ✅ Temporary shortage (2-30 days)
• ✅ When you'll repay quickly (saves EMI commitment)

When NOT to Use Overdraft?

• ❌ Long-term needs (> 3 months) — take a loan instead
• ❌ Large amounts for long period (interest adds up)
• ❌ Discretionary spending (luxury purchases)
• ❌ If you can't repay within 30-60 days
• ❌ Regular/recurring expenses (indicates budget issue)

OD Advantages

• ✅ Flexibility: Use only what you need, when you need
• ✅ Interest only on utilized amount (not on limit)
• ✅ No prepayment charges (repay anytime)
• ✅ Instant access (no approval delay)
• ✅ Revolving facility (repay and reuse)
• ✅ No fixed EMI commitment

OD Disadvantages

• ❌ Higher rate than regular loans (12% vs 10%)
• ❌ Easy to over-use (temptation to spend)
• ❌ Can become expensive if used long-term
• ❌ Annual renewal charges
• ❌ Bank can reduce/cancel limit anytime

How to Minimize OD Costs

• Repay as soon as possible (interest stops immediately)
• Use only for genuine emergencies
• Negotiate lower rate (if good credit score)
• Opt for secured OD against FD (8-10% vs 12-15%)
• Compare rates across banks (can differ by 2-3%)
• Avoid overutilization (penalty charges apply)

Impact on Credit Score

• Positive: Available credit limit improves score
• Neutral: Using OD doesn't hurt if paid on time
• Negative: Maxing out limit ( > 90% utilization) drops score
• Negative: Missing interest payments (reported as default)
• Tip: Keep utilization below 30% of limit

Pro Tips

• Negotiate rate during good credit score (750+)
• Link to salary account for better terms
• Use OD only for 2-30 days (sweet spot)
• Repay in full once funds available (save interest)
• Monitor utilization (don't exceed 50% regularly)
• Review annual renewal charges (shop around)