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How to Compare Fixed Deposit Rates in Sri Lanka

Comparing fixed deposits is not just about looking for the highest headline interest rate. A good comparison also looks at tenure, payout type, withholding treatment, minimum deposit rules, and the reliability of the published rate source.

By Lankacalculator editorial teamReviewed by Lankacalculator review deskUpdated March 2026
How to Compare Fixed Deposit Rates in Sri Lanka guide cover
Editorial standardLankacalculator publishes practical explainers and expects readers to verify critical financial, health, legal, or provider-specific decisions against official information.
Methodology
  • This guide is written to support a live calculator or decision flow already published on the site.
  • The content is structured for practical use: what the topic means, what affects the result, common mistakes, and what to check next.
  • Where the topic affects money, health, or compliance, the guide is intended as explanatory content before a final decision is verified against primary sources.
Decision checklist
CheckWhy it matters
Confirm the current rule or document pathPractical guides are useful first, but official information should still control final decisions.
Separate concept from costA legal or compliance step often needs its own business or money analysis alongside it.
Keep a record of assumptionsIt is easier to revisit the result when the source inputs and purpose are clear.
Main search intent “Which fixed deposit is best ” and “How do I compare FD rates ”
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What to compare first

  • Interest rate for the exact tenure you want
  • Monthly-interest option versus maturity payout
  • Whether withholding tax is applied in your estimate
  • The deposit amount you actually plan to invest

A bank can have a strong rate at one-year tenure and a weaker rate at two years. Another bank can look less attractive at short tenures but better at long tenures. That is why you should always compare the same amount against the same period.

Why payout type matters

Some people want monthly cash flow. Others want the maximum possible amount at maturity. These are different goals. A monthly-income FD can feel attractive if you want regular cash, but compounding may work differently from a maturity-focused option. You should decide the goal first, then compare the products that fit that goal.

Worked example

If you deposit LKR 1,000,000 for one year, two banks might offer rates that look close on paper. But the better choice depends on whether you want monthly income or a final maturity value. If one product pays out monthly and another allows more compounding inside the deposit, the end result may differ even with similar quoted rates.

A practical comparison checklist

  • Choose the deposit amount
  • Choose the exact tenure
  • Choose monthly interest or maturity value
  • Turn withholding assumptions on or off as needed
  • Then compare across banks

FAQ

Is the highest interest rate always the best option
No. The best option depends on tenure, payout style, tax treatment, and your cash-flow goal.
Should I compare monthly and annual products together
Only if you convert them into the same practical outcome for your goal.
Why should I recheck the bank page before investing
Because listed rates can change and some rates depend on amount bands or product conditions.
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