Your Complete Guide to the Sri Lanka Fixed Deposit Tracker

The Sri Lanka Fixed Deposit Tracker is a free, privacy-first portfolio management tool that lets you track all your fixed deposits across 30 Sri Lankan banks in one dashboard. It calculates interest earnings with 10% withholding tax (WHT) applied, monitors maturity dates with color-coded alerts, simulates renewal scenarios, and projects your portfolio's future net worth. All data stays in your browser nothing is sent to any server.

Quick Facts About Fixed Deposits in Sri Lanka

• Minimum deposit: Typically LKR 10,000 to LKR 100,000 depending on the bank
• Tenure range: 1 month to 120 months (most common: 3 to 24 months)
• Interest calculation: Simple interest (not compound)
• Withholding tax: 10% deducted at source on interest earned
• Deposit insurance: Protected under the Sri Lanka Deposit Insurance and Liquidity Support Scheme (SLDILSS)
• Number of banks supported: 30 licensed commercial, specialized, and foreign bank branches
• Data privacy: All data stored locally in browser, zero server communication

What is a Fixed Deposit?

A Fixed Deposit is a financial instrument where you deposit a lump sum with a bank for a predetermined period at a fixed interest rate. Unlike savings accounts, FDs lock your money for the agreed tenure in exchange for higher interest rates.

How FDs Work in Sri Lanka

• Minimum deposits vary by bank, typically starting from LKR 10,000 to LKR 100,000
• Tenure options range from 1 month to 120 months (10 years), though most deposits are between 3 and 24 months
• Interest rates depend on the bank, deposit amount, and tenure longer tenures and larger deposits generally earn higher rates
• Interest calculation uses simple interest: $\text{Interest} = P \times r \times \frac{t}{12}$ where $P$ is the principal, $r$ is the annual rate (as a decimal), and $t$ is the tenure in months
• Withholding Tax (WHT) at 10% is deducted at source on interest earned. This tracker applies WHT to all calculations so you always see both gross and net (after-tax) values

Supported Banks

This tracker supports 30 banks operating in Sri Lanka, including licensed commercial banks, specialized banks, and foreign bank branches:

• State-owned: Bank of Ceylon, People's Bank
• Major private: Commercial Bank, Hatton National Bank, Sampath Bank, Seylan Bank, DFCC Bank, Nations Trust Bank, National Development Bank, Pan Asia Bank, Union Bank, Amana Bank, Cargills Bank, HDFC Bank
• Specialized: National Savings Bank, Regional Development Bank, SANASA Development Bank, Sri Lanka Savings Bank, State Mortgage & Investment Bank
• Foreign branches: HSBC Bank, Standard Chartered Bank, Citi Bank, Deutsche Bank, State Bank of India, Indian Bank, Indian Overseas Bank, MCB Bank, Habib Bank, Bank of China, Public Bank Berhad

Getting Started

First-Time Setup

When you first visit the tracker, a guided onboarding walks you through the key features and explains how your data is stored. You can then choose to:

• Add your first Fixed Deposit enter your real FD details to start tracking
• Load demo data explore the tool with sample FDs (including renewal chain examples) before adding your own
• Import a CSV restore a previously exported portfolio from another device or browser

Adding a Fixed Deposit

Click Add Fixed Deposit and fill in:

1. Bank Name select from the list of 30 Sri Lankan banks
2. FD Label (optional) a custom name like "Emergency Fund" or "Mum's FD"
3. Principal Amount the deposit amount in LKR
4. Interest Rate the annual rate offered by the bank (adjustable from 0% to 30%)
5. Start Date when the FD was opened
6. Tenure duration in months (the maturity date is calculated automatically)
7. Interest Payout Type At Maturity, Monthly, or Quarterly
8. Auto-Renewal toggle on if the bank will automatically renew at maturity, with an optional renewal rate

Understanding the Dashboard

Once you have FDs in the tracker, the dashboard gives you a complete overview:

Summary Cards

Five cards at the top show your portfolio at a glance:

• Total Principal the sum of all active FD deposits
• Total Interest projected interest earnings (gross and net after 10% WHT)
• Projected Value total portfolio value at maturity (gross and net)
• Active FDs the number of FDs currently being tracked
• Next Maturity your soonest-maturing FD with a countdown

Color-Coded Status Alerts

Each FD shows a status badge so you never miss a maturity date:

• Active (green) more than 90 days until maturity
• Maturing Soon (amber) 30 to 90 days remaining
• Maturing Soon (red) 30 days or fewer remaining
• Matures Today (red) maturity date is today, with Withdraw and Renew actions available
• Overdue (gray) past maturity date, action needed

Status	Color	Condition
Active	Green	More than 90 days until maturity
Maturing Soon	Amber	30 to 90 days remaining
Maturing Soon	Red	30 days or fewer remaining
Matures Today	Red	Maturity date is today
Overdue	Gray	Past maturity date

Portfolio Distribution Chart

A pie chart showing how your deposits are spread across banks. This helps you spot concentration risk at a glance if too much of your portfolio is at one bank, the Insights Panel will flag it.

Smart Insights

The tracker automatically detects portfolio patterns and surfaces actionable observations:

• Concentration risk warns if more than 50% of your principal is at a single bank
• Next maturity alert highlights your soonest-maturing FD
• Laddering gaps identifies gaps of 3+ months between maturities where a laddered approach could improve liquidity

Viewing FD Details

Click View Details on any FD to see a comprehensive read-only view including:

• All FD details (bank, principal, rate, tenure, dates, payout type, auto-renewal status)
• Calculated returns: gross and net interest, gross and net maturity value
• Renewal History if this FD was renewed from a previous one, the full chain is displayed prominently at the top, showing how the principal and rate evolved across renewals
• Notes you've added

Renewal Chains

When you renew an FD, the tracker links the old and new FDs together in a renewal chain. This lets you:

• See the complete history of how an FD evolved over multiple renewals
• Track how your principal grew (or stayed the same) across cycles
• View the interest rate changes at each renewal

The renewal history is displayed prominently in both the View Details dialog and the Edit dialog, so you always have context about where an FD came from.

Using the Renewal Planner

For FDs approaching maturity, the Renewal Planner helps you decide whether to withdraw or renew:

1. Withdraw vs. Renew comparison see your withdrawal proceeds (principal + net interest) side by side with what you'd earn by renewing
2. Multi-cycle simulation project what happens if you renew 2, 3, or 5 times at a given rate and tenure
3. Cycle-by-cycle breakdown each renewal cycle shows the starting principal, interest earned (gross and net), maturity value, and maturity date

This is especially useful for comparing whether to lock in at a current rate or wait for potentially better rates.

Future Net Worth Projector

Select any future date (or use quick-select buttons for 6 months, 1 year, 2 years, or 5 years) to project your portfolio's value. The projector accounts for:

• Interest accrual on all active FDs
• Maturity events and auto-renewal settings
• WHT deductions on earned interest
• Monthly data points shown in a line chart (gross and net values)

Managing Your Portfolio

Withdrawing an FD

When an FD matures (or is overdue), you can mark it as withdrawn. The tracker shows you the maturity value breakdown before you confirm. Withdrawn FDs move to the History section.

Renewing an FD

When renewing, you can adjust the principal (e.g., roll in the maturity value), set a new rate and tenure, and choose a different payout type. The old FD is linked to the new one, creating a renewal chain.

History Section

Withdrawn and renewed FDs don't disappear they move to a collapsible History section below the active FD table. You can click any historical FD to view its full details, including its renewal chain. Historical records are read-only.

Clearing All Data

A Clear All Data button at the bottom of the page lets you permanently delete all FDs, history, and settings to start fresh. This requires confirmation since it cannot be undone.

Data Storage and Privacy

Your Data Stays on Your Device

All FD data is saved in your browser's local storage. Nothing is sent to any server your financial information stays completely private. However, this means:

• Clearing browser data will remove your FDs always keep a backup
• Switching browsers or devices requires importing your data
• Private/incognito mode may not persist data between sessions

CSV Export and Import

Use Export CSV to download your entire portfolio as a CSV file. This backup includes all FDs (active, withdrawn, and renewed), along with metadata like the WHT rate. You can:

• Save the file to your computer, cloud storage, or email it to yourself
• Use Import CSV to restore your portfolio on any device or browser
• Import merges with existing data duplicates are automatically skipped

Understanding Interest Calculations

Simple Interest Formula

Sri Lankan banks typically use simple interest for FD calculations:

$\text{Interest} = \frac{P \times R \times T}{12 \times 100}$

Where:

• $P$ = Principal amount (your deposit)
• $R$ = Annual interest rate (percentage)
• $T$ = Tenure in months

For example, a 12-month FD of LKR 1,000,000 at 12% p.a. earns LKR 120,000 in gross interest.

Interest Payout Options

1. At Maturity interest accumulates and is paid with the principal when the FD matures. Best for maximizing returns when renewing, since the full interest adds to your new principal.
2. Monthly interest is paid to your savings account every month. Useful if you need regular income from your investments.
3. Quarterly interest is paid every three months. A middle ground between at-maturity and monthly options.

Payout Type	When Interest is Paid	Best For
At Maturity	When the FD matures (lump sum)	Maximizing returns when renewing
Monthly	Every month to your savings account	Regular income from investments
Quarterly	Every 3 months to your savings account	Balance between income and simplicity

Withholding Tax (WHT) on FD Interest

WHT is a tax deducted at source by the bank on interest earned. This tracker applies a default rate of 10% to all interest calculations. Both gross and net values are shown throughout the tool so you always know exactly what you'll receive after tax.

Actual WHT rates may vary based on your tax identification status, residency, and total interest earned across deposits. Always consult your bank or tax advisor for your specific rate.

Why Actual Bank Values May Vary

The calculations in this tool use standard simple interest formulas. Actual values from your bank may differ slightly due to:

• Day-count conventions (actual/365 vs. 30/360)
• Rounding differences
• Promotional rate conditions
• Mid-term rate changes for variable-rate deposits

Always verify final amounts with your bank. This tool is designed for planning and tracking purposes.

FD Investment Strategies

The Laddering Strategy

Instead of putting all your money in one FD, spread it across multiple FDs with staggered maturity dates:

• FD 1: LKR 200,000 for 3 months
• FD 2: LKR 200,000 for 6 months
• FD 3: LKR 200,000 for 12 months
• FD 4: LKR 200,000 for 24 months

Benefits:

• Regular access to funds as each FD matures
• Ability to reinvest at potentially higher rates
• Reduced risk of locking all funds at a single rate

The tracker's Smart Insights will flag laddering gaps in your portfolio and suggest improvements.

Diversification Across Banks

Don't put all your deposits with one bank. Spreading across 2-3 reputable banks:

• Protects against institution-specific risk
• Lets you take advantage of promotional rates from different banks
• Keeps each deposit within the deposit insurance limit

The Distribution Chart and Concentration Risk insight help you monitor diversification.

Rate Shopping Tips

• Compare rates across multiple banks before committing, especially for large deposits
• Check if the bank offers premium rates for senior citizens, employees, or specific deposit ranges
• Consider shorter-tenure FDs during periods of rising interest rates to reinvest at higher rates soon
• Look for promotional or special FD products that may offer above-normal rates

When to Break an FD Early

Breaking an FD before maturity usually incurs a penalty (reduced interest rate). Consider early withdrawal only when:

• You have an emergency need for the funds
• Interest rates have risen significantly, and reinvesting would earn substantially more even after the penalty
• You need to restructure your portfolio for better diversification

Frequently Asked Questions

Is my data safe?

Yes. All data is stored locally in your browser. Nothing is sent to any server. We recommend using the CSV Export feature regularly to keep a backup of your portfolio.

What is WHT on fixed deposits?

Withholding Tax (WHT) is a tax deducted by the bank on the interest you earn. This tracker uses a default rate of 10%, and all calculations show both gross (before tax) and net (after tax) values.

How is FD interest calculated?

Sri Lankan banks use simple interest for fixed deposits. The formula is: Interest = Principal x Rate x Time / 12. For a 12-month FD of LKR 1,000,000 at 12% p.a., the interest would be LKR 120,000 gross, or LKR 108,000 net after 10% WHT.

What happens when my FD matures?

When your FD reaches its maturity date, you have three options:

1. Withdraw collect your principal plus interest (net of WHT)
2. Renew roll over the maturity amount into a new FD (potentially with a different rate or tenure)
3. Auto-renew if enabled, the bank automatically creates a new FD with the same tenure at the prevailing rate

The tracker supports all three actions and maintains a full renewal chain history.

Should I choose monthly or at-maturity payouts?

It depends on your needs:

• Choose at-maturity if you don't need the income now and want to maximize your returns when renewing (the full interest adds to your new principal)
• Choose monthly if you need regular income from your savings
• Choose quarterly as a compromise between regular income and simplicity

How safe are FDs in Sri Lanka?

FDs are considered one of the safest investment options. Sri Lanka has a deposit insurance scheme through the Sri Lanka Deposit Insurance and Liquidity Support Scheme (SLDILSS), which provides protection up to a specified limit per depositor per institution. It's wise to diversify across multiple reputable banks and stay within insured limits.

Can I transfer my data to another device?

Yes. Use Export CSV to download your portfolio, then use Import CSV on your other device to restore it. The import automatically skips any FDs that already exist in the destination portfolio.

Can I use this tracker for FDs in other currencies?

This tracker is specifically designed for Sri Lankan Rupee (LKR) fixed deposits. All calculations, bank listings, and WHT handling are tailored for the Sri Lankan context.