Financial Literacy
Banking & Mobile Finance Basics
Lesson
8
Why This Lesson Matters
You work hard for your money. A good banking setup helps your money work for you. With the right account, a clear plan, and a few safety habits, you can save faster, pay bills easily, avoid unnecessary fees, and protect yourself from scams. In Sri Lanka, many payments are moving from cash to bank transfers, QR codes, and mobile wallets. If you understand the basics, these tools become your helpers—not your stress.
Think of banking as a set of pipes for your money. If the pipes are well designed—separate lines for bills, savings, and daily use—money flows smoothly to the right places. If the pipes are messy, money leaks through fees, mistakes, and impulse taps. This lesson shows you how to choose, organize, and protect your banking so it supports your goals.
“Make your money flow by design, not by accident.”

Step 1: What Banks and Mobile Wallets Actually Do
A bank account is a safe place to store money, make payments, and track your history. Think of three common types:
Savings account: your everyday base. You can deposit, withdraw, and sometimes earn a small amount of interest. Best for buffers and short-term goals.
Current/transaction account: built for frequent payments and business use. Often comes with a debit card and more transfers.
Fixed deposit / term deposit: you keep money locked for a set time in exchange for a higher interest rate. Good for money you do not need to touch soon.
A mobile wallet is a digital pocket on your phone. You can receive money, pay shops with QR, buy airtime, or send to another person. A wallet is fast and handy for small payments, but it usually pays little or no interest. That’s okay—its job is convenience, not growth.
How money moves between them:
Cash → Bank: deposit at a branch, ATM cash deposit, or via agent.
Bank → Wallet: top-up in the app.
Wallet → Bank: transfer out (may have fees or limits).
Bank ↔ Bank: transfer using account numbers/QR; some transfers are instant, some take time.
Card → Shop: pay with debit card where accepted.
What to check before you choose:
Fees: monthly charges, ATM withdrawals, over-the-counter withdrawals, SMS alerts, wallet transfer fees, QR payment charges.
Access: nearest branch/ATM/agents, app quality, hotline support.
Limits: daily transfer limits, per-transaction caps.
Interest: how much the savings/fixed deposit pays, and how often.
Security: PIN/biometrics, two-factor codes, freeze options if the phone/card is lost.
Your goal is a simple system: bank for safety and separation, wallet for quick payments, and a clear rule for moving money on payday so your goals are funded first.
Step 2: Set Up a Simple, Safe Money Flow
Start with one main bank account and one mobile wallet. Keep your buffer and short-term goals in the bank (can be separate sub-accounts/pots if your bank allows it). Use the wallet for day-to-day spends and small transfers. This way, your goal money is not mixed with daily money.
On payday (or whenever you receive income), split the money by design:
Needs (food staples, rent/boarding, utilities, transport to school/work, basic medicine, minimum debt).
Pay Yourself (buffer, goals, debt extra).
Wants (small, planned treats).
If your bank offers “pots,” “goals,” or “sub-accounts,” label them: Buffer, Exam Fees, Uniforms, Tools. Move money into these the same day income arrives. If your bank doesn’t have pots, use separate envelopes at home and deposit to the main account weekly.
Opening or upgrading an account: you’ll usually need your NIC, a phone number, sometimes proof of address, and a minimum deposit. Students under 18 often open accounts with a parent/guardian. Ask for fee transparency: “What are the monthly charges? ATM fees? SMS fees? Transfer fees? Card replacement cost?”
Reading statements: once a week, open your app or printed passbook and scan for:
Date, amount, and description of each transaction.
Fees you didn’t expect—note them and ask the bank if unsure.
Transfers you don’t recognize—report immediately.
Security basics (non-negotiable):
Use a strong PIN, not your birthday or phone number.
Turn on biometrics and two-factor verification.
Never share OTP codes with anyone—not even a “bank officer.”
If your phone/SIM is lost, call the bank/wallet hotline at once, freeze the app, and change passwords.
Avoid logging in over public Wi-Fi. If you must, use mobile data.
As you grow, add one more layer: a small fixed deposit for money you won’t need for months. It earns a bit more and is harder to touch impulsively. Keep your emergency fund liquid (savings account), and use fixed deposits for planned medium-term goals.

The Golden Rule
Use banks and wallets to separate money, automate good habits, minimize fees, and maximize safety.
Where Should I Keep This Money?
Money Type | Bank Savings | Mobile Wallet | Cash at Home |
Daily spending | ◯ | ✓ | ✓ (small only) |
Buffer (emergency fund) | ✓ | ◯ | ◯ |
Short-term goals (3–12 mo.) | ✓ (pots) | ◯ | ◯ |
Fixed goals (12+ mo.) | ✓ (FD/term) | ✕ | ✕ |
Night/holiday emergencies | ◯ | ◯ | ✓ (a little) |
Interest/growth | ◯ | ✕ | ✕ |
Security vs. theft/fraud | High | Medium | Low |
Key: ✓ best, ◯ acceptable, ✕ not recommended
Exercises: Your Turn to Set It Up
Exercise 1 — Map Your Current Setup. On one page, draw three boxes: Bank, Wallet, Cash. Under each, write how you currently use it. Circle any messy area—for example, “Goal money mixed with daily cash,” or “No clear buffer location.”
Exercise 2 — Choose Your Payday Flow. Write your exact split rule
