How accurate is this TNB bill estimator?

This is an estimate based on domestic tariff blocks. Actual bills may include ICPT, surcharge, rebate, and other adjustments that change over time.

ICPT (Imbalance Cost Pass-Through) is a mechanism to adjust electricity tariffs based on fuel price fluctuations. It may appear as a surcharge or rebate on your bill.

Can I edit the tariff rates?

Not in this calculator. The rates are set as a baseline. For the most current rates, refer to TNB's official tariff schedule.

KiraSmart

TNB Electricity Bill Estimator

Estimate a domestic electricity bill using TNB's current tariff structure. Results remain estimates because AFA and bill-specific adjustments can change.

Monthly kWh usage *

Surcharge (optional)

Rebate (optional)

Estimated Total Bill

RM48.83

kWh usedRM250.00

Energy chargeRM67.58

Capacity chargeRM11.38

Network chargeRM32.13

Retail chargeRM0.00

Energy Efficiency Incentive (rebate)RM62.25

Service tax (8%)RM0.00

AFA / adjustmentRM0.00

Total estimated billRM48.83

Formula Breakdown

Energy charge = kWh x 27.03 sen (up to 1,500 kWh; excess at 37.03 sen)
Capacity + Network = kWh x (4.55 + 12.85) sen
Retail charge = RM10 if usage > 600 kWh, else RM0
EEI rebate = tiered rebate (up to 25 sen/kWh) for usage <= 1,000 kWh
Service tax = 8% on charges for usage above 600 kWh
Total = Energy + Capacity + Network + Retail - EEI + Service tax + AFA

Assumptions

New TNB domestic tariff effective 1 July 2025 (component-based).
Energy 27.03 sen/kWh (up to 1,500 kWh) + Capacity 4.55 + Network 12.85 sen/kWh.
Retail charge RM10/month, waived for usage of 600 kWh or below.
Energy Efficiency Incentive: tiered rebate up to 25 sen/kWh for usage of 1,000 kWh or below.
Service tax 8% applies to consumption above 600 kWh.
AFA (fuel adjustment, up to +/-3 sen/kWh, revised monthly) is not included by default — enter it in the adjustment field.

This calculator provides estimates only. KiraSmart is not financial advice. Please verify with official sources or professionals before making decisions. Read full disclaimer

Information last reviewed: 2026-05-19 · Result type: user-input estimate

Frequently Asked Questions

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Current domestic tariff structure

From 1 July 2025, Peninsular Malaysia's domestic tariff no longer uses the old five Tariff A blocks. Bills are built from energy, capacity, network and retail charges, then adjusted for the Energy Efficiency Incentive (EEI), AFA and applicable tax.

Component	Official rate
Energy charge (up to 1,500 kWh)	27.03 sen/kWh
Energy charge (above 1,500 kWh)	37.03 sen/kWh
Capacity charge	4.55 sen/kWh
Network charge	12.85 sen/kWh
Retail charge	RM10/month

Retail charge and EEI

The RM10 retail charge is waived when monthly use is 600 kWh or below. EEI provides tiered incentives for more efficient use; the calculator applies it marginally across the usage bands.

AFA and service tax

AFA can be a surcharge or rebate and should be checked on the current bill. Service tax can apply above the prescribed domestic-usage threshold. Enter the adjustment shown on your bill when known.

Source and effective period

Component rates are referenced from the Energy Commission schedule for 1 July 2025 through 31 December 2027. KiraSmart last reviewed this on 17 July 2026.

Open the official tariff schedule

Read the electricity-bill guide →