Fixed Deposit Calculator Nigeria

Calculate maturity value, gross interest, and net return after 10% withholding tax — compare rates from Nigeria's top banks.

%
months
%
Net Maturity Value
₦1,180,000
Deposit (Principal)
₦1,000,000
Gross Interest
₦200,000
WHT Deducted (10%)
₦20,000
Net Interest
₦180,000
Net Annual Yield
18.0%

How to Use This Calculator

Calculate Return Tab

Enter your deposit amount, the annual interest rate offered by the bank, the tenor in months, and the WHT rate (10% standard). The calculator shows gross interest, WHT deducted, net interest, and the maturity value you receive when the deposit matures.

Compare Banks Tab

Enter the same deposit amount and tenor for three different banks with their respective rates. The bank offering the highest net return is automatically highlighted. Useful when shopping around for the best fixed deposit rate in Nigeria.

The Formula

Gross Interest = Principal × Rate% × Months/12 WHT = Gross Interest × 10% Net Interest = Gross Interest − WHT Maturity Value = Principal + Net Interest Net Annual Yield = (Net Interest / Principal) × (12 / Months) × 100

Note: This calculator uses the simple interest formula. Some banks compound interest periodically (monthly or quarterly) for longer tenors — confirm with your bank whether their quoted rate is simple or compound. Compound interest will give slightly higher returns than simple interest at the same nominal rate.

Example

Scenario: Ngozi places a ₦1M fixed deposit for 12 months at 20%

Principal₦1,000,000
Rate20% per annum
Tenor12 months
Gross interest₦200,000
WHT (10%)-₦20,000
Net interest₦180,000
Maturity value₦1,180,000
Net annual yield18% (after WHT)

At an inflation rate of ~15%, a 20% FD yields a real return of approximately 3–5% — modest but positive. Always compare the net yield (after WHT) with inflation.

Best Fixed Deposit Rates in Nigeria 2026

Fixed deposit rates change frequently. As a guide for 2026, here is what various institution types are offering:

Always confirm the current rate directly with the bank. Rates listed above are indicative for early 2026 and subject to change with CBN policy movements.

NDIC Insurance Limits

The Nigeria Deposit Insurance Corporation (NDIC) insures deposits at licensed banks up to:

If you have more than ₦5M to place in fixed deposits, spread it across multiple banks to maximise NDIC coverage.

FAQ

For individuals, the 10% WHT on fixed deposit interest is generally a final tax — you do not need to declare this income separately in your PAYE or personal income tax return. For companies, WHT is a credit that can be offset against corporate income tax payable. Keep your WHT credit notes from the bank for records and audit purposes.
Most Nigerian banks offer fixed deposits with a minimum tenor of 30 days, though 3 months (90 days) is more common for getting a good rate. Longer tenors generally attract higher rates. For the best rates, consider 6-month and 12-month tenors — especially when interest rates are expected to fall, locking in at the current high rate is advantageous.
Yes. Most Nigerian banks offer FD-backed loans at competitive rates — typically 2–5% above the FD rate. You can borrow up to 80–100% of your FD balance while your deposit continues to earn interest. This is much cheaper than a personal loan and a useful liquidity solution if you need cash but do not want to break your deposit early.
T-bills generally offer higher rates (22–24% vs 18–22% for FDs) and sovereign credit risk, but are subject to 10% WHT. Bank FDs have credit risk (mitigated by NDIC coverage up to ₦5M) and WHT treatment varies. For amounts within NDIC limits, it comes down to rate comparison after tax. For larger amounts, T-bills often win on rate and safety. Use this calculator and the T-bill calculator side by side to compare.

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