Guides
Sri Lanka Calculation Guides
These guides turn calculator results into plain-language explanations, examples, media-rich walkthroughs, and decision support for money, health, education, household planning, and everyday Sri Lanka cost checks.
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How to Calculate Your Electricity Bill in Sri Lanka
If you have ever looked at a power bill and wondered why the total is higher than expected, this guide will help. The easiest way to understand your monthly bill is to break it into four parts: your provider, your tariff category, your monthly usage, and the taxes or extra charges applied to the subtotal.
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CEB Tariff Slabs Explained Simply
Many Sri Lankan electricity users hear the phrase “tariff slab” but do not fully understand what it means. A tariff slab simply means your electricity use is divided into ranges, and each range can be priced differently.
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APIT, EPF, and ETF Explained With Examples
If you work in Sri Lanka and receive a salary, three payroll terms matter a lot: APIT, EPF, and ETF. They affect both your monthly take-home pay and your employer’s total payroll cost.
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How to Calculate Net Salary in Sri Lanka
Net salary is the amount you actually receive after deductions. Many people think net salary is just gross salary minus tax, but in practice it usually involves more than that.
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Gross Salary vs Take-Home Salary
Gross salary is the headline number. Take-home salary is the number that actually reaches your bank account. Confusing the two leads to bad budgeting, weak salary comparisons, and unrealistic expectations during job changes.
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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.
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Fixed Deposit Monthly Interest vs Maturity Value
This is one of the most important fixed deposit decisions in Sri Lanka. Do you want cash every month, or do you want the largest possible amount at the end of the term
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How Loan Installments Are Calculated
A loan installment is not just the loan amount divided by the number of months. The monthly installment usually combines principal repayment and interest, and the relationship between those two parts changes over time under a standard amortization method.
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Flat Rate vs Reducing Balance Interest
Many borrowers compare loan rates without checking how the interest is actually applied. This is a major mistake. A “flat rate” and a “reducing balance” rate can produce very different effective borrowing costs.
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