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  • Writer's pictureSANJANA JEVRANI


Updated: Apr 15



A Debit Card is a financial tool that provides a convenient and secure way to access funds held in a checking or savings account. Unlike credit cards, which allow users to borrow money up to a certain limit, a debit card enables direct spending of available funds in the linked account.

What makes debit cards unique is their immediate impact on your bank balance. When you make a purchase or withdraw cash using a debit card, the corresponding amount is deducted directly from your account balance in real time or within a short period.

In this blog, we will analyze the features, working, advantages/disadvantages & cost of debit cards.



  1. Direct Access to Funds: Debit cards provide direct access to the funds available in your linked checking or savings account. When you make a purchase or withdraw cash using a debit card, the corresponding amount is immediately deducted from your account balance, allowing for real-time transaction processing.

  2. No Debt Accumulation: Unlike credit cards, which allow users to borrow money up to a certain limit and accrue debt, debit cards only allow spending within the available balance in the linked account. This feature helps users avoid accumulating debt, as transactions are limited by the funds in the account.

  3. PIN-Based Security: Debit cards often utilize Personal Identification Numbers (PINs) for added security during transactions. The cardholder must enter their unique PIN at the point of sale or ATM to authorize a transaction, adding an extra layer of protection against unauthorized use of the card.

  4. Access to ATM Services: Debit cards typically allow users to withdraw cash from Automated Teller Machines (ATMs) using their card and PIN. This feature provides convenient access to cash for everyday expenses, even when physical bank branches are closed.

  5. Widespread Acceptance: Debit cards are widely accepted for both in-person and online transactions at various merchants and retailers worldwide. They can be used for everyday purchases, bill payments, online shopping, and more, making them a versatile payment option for consumers.



The working of a debit card involves a seamless process that facilitates electronic transactions and provides convenient access to funds in a bank account. Here's a unique breakdown of how debit cards operate:

  1. Card Authentication: When a debit card is issued, it is linked to the cardholder's bank account. Each card is equipped with a magnetic stripe, EMV chip, or contactless technology containing unique information associated with the cardholder and their account.

  2. Transaction Initiation: When making a purchase, the cardholder presents their debit card to the merchant. For in-person transactions, the card may be swiped, inserted into a chip reader, or tapped on a contactless terminal. For online transactions, the card details are entered manually or saved for future use.

  3. Authorization Request: Upon initiating a transaction, the merchant sends an authorization request to the card network (e.g., Visa, Mastercard) or the cardholder's issuing bank. This request includes details such as the card number, transaction amount, and merchant information.

  4. Authorization Approval: The card network or issuing bank reviews the authorization request to determine whether the transaction can be approved. Factors considered include the available balance in the cardholder's account, any spending limits or restrictions, and the accuracy of the transaction details.

  5. Transaction Processing: If the authorization is approved, the transaction proceeds and the merchant receives confirmation to complete the sale. Simultaneously, the cardholder's account is debited for the transaction amount, reducing the available balance by the purchase amount.

  6. Notification and Recordkeeping: Both the cardholder and the merchant receive confirmation of the transaction, typically in the form of a receipt. The cardholder's bank statement or online banking portal also reflects the transaction details, providing a record of the purchase for accounting and reconciliation purposes.

  7. Security Measures: Debit cards incorporate various security measures to protect against fraud and unauthorized use. These may include PIN verification for in-person transactions, encryption of card data during transmission, fraud monitoring systems, and the ability to report lost or stolen cards promptly.

  8. Optional Overdraft Protection: Some banks offer overdraft protection, allowing transactions to be approved even if the account balance is insufficient. In such cases, the bank may cover the shortfall temporarily, subject to overdraft fees or interest charges.



Here's a breakdown of the costs associated with debit cards today:

  1. Annual Fees: Many debit cards do not have annual fees, making them a cost-effective option for consumers. However, some financial institutions may charge nominal annual fees for premium debit card services, such as enhanced rewards programs or exclusive benefits.

  2. Transaction Fees: While debit card transactions within the same country are typically free, international transactions may incur foreign transaction fees. These fees, charged by the card network or issuing bank, are usually a percentage of the transaction amount and cover currency conversion and processing costs.

  3. ATM Fees: While debit cardholders can typically withdraw cash from their bank's ATMs free of charge, using ATMs outside of their bank's network may incur ATM fees. These fees can consist of two parts: a fee charged by the ATM operator and a fee charged by the cardholder's bank for using an out-of-network ATM.

  4. Overdraft Fees: If a debit card transaction exceeds the available balance in the linked bank account and the account does not have overdraft protection, the transaction may be declined. However, if the account has overdraft protection and the transaction is approved, the bank may charge overdraft fees, which can be significant.

  5. Replacement Card Fees: If a debit card is lost, stolen, or damaged, the cardholder may need to request a replacement card from their bank. Some banks may charge a fee for issuing a new card, although many offer one free replacement per year.

  6. Additional Services Fees: Certain optional services associated with debit cards may incur fees. For example, expedited card delivery, paper statements, and balance inquiries at non-affiliated ATMs may come with associated charges.

  7. Merchant Fees: While not directly borne by the cardholder, it's important to note that merchants accepting debit card payments may incur transaction fees, known as interchange fees, paid to the card networks and acquiring banks. These fees are typically a small percentage of the transaction amount and contribute to covering the costs of payment processing infrastructure and services.



Debit Card

Credit Card

Source of Funds

Linked to checking or savings accounts.

Borrowed funds from issuing bank.

Spending Limit

Limited by the available balance in a linked account

Limited by credit limit set by issuing bank.

Payment Method

Uses available funds in real-time.

Borrowed funds with the obligation to repay over time.

Interest Charges

No interest charges (unless using overdraft)

Interest is charged on outstanding balances.

Credit Check

Typically, no credit check is required.

A credit check is required for approval.


Advantages of Debit Cards

  1. Convenience: Easy access to funds without carrying cash.

  2. No Debt Accumulation: Spend only what's available in the linked account, reducing the risk of debt.

  3. Budgeting: Helps with budget management as transactions are deducted directly from the account.

  4. Widespread Acceptance: Widely accepted for both online and in-person transactions.

  5. Security: PIN-based security and fraud protection features provide added security.

Disadvantages of Debit Cards

  1. Limited Protection for Fraudulent Transactions: Limited liability compared to credit cards for fraudulent transactions.

  2. No Buildup of Credit History: Debit card usage does not contribute to building a credit history.

  3. Potential Overdraft Fees: Transactions may be declined or incur overdraft fees if there are insufficient funds.

  4. Lack of Rewards: Typically, do not offer rewards programs or cashback benefits like credit cards.

  5. Limited Purchase Protections: Limited protections for purchases compared to credit cards, such as extended warranties and purchase insurance.


In essence, debit cards offer unparalleled convenience and security, empowering users to manage their finances effortlessly. While they facilitate real-time transactions and promote responsible spending, it's crucial to remain mindful of potential drawbacks such as overdraft fees and limited fraud protection. By striking a balance between awareness and utilization, individuals can leverage debit cards to navigate their financial journeys with confidence and control.


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