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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.

The relief for usage up to 800 kWh applies only in September–December 2026.

Enter values and click Calculate to see results.

Formula Breakdown

  1. Select energy and EEI rates by total kWh, then multiply by all usage.
  2. Add capacity, network and retail charges; subtract EEI and include applicable AFA.
  3. Add SST on the taxable portion and KWTBB. Apply the billing-month exemptions described below.

Assumptions

    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: 2026-09-18 · Result type: user-input estimate

    Frequently Asked Questions

    How is this TNB estimate calculated?
    It uses the domestic general tariff for Peninsular Malaysia: energy, capacity, network and retail charges, less the whole-usage EEI rebate, plus applicable AFA, SST and KWTBB. It assumes one monthly billing period; actual account charges and proration can differ.
    What is AFA?
    Automatic Fuel Adjustment replaced ICPT under the July 2025 tariff. It changes monthly; enter the surcharge or rebate in RM. Zero means no AFA included, except where a billing-month exemption applies.
    Which billing month gets the 800 kWh relief?
    For September–December 2026, total usage up to 800 kWh is exempt from AFA, retail and SST. Above 800 kWh the usual rules apply. The normal 600 kWh retail/SST thresholds resume in January 2027. KWTBB remains included where applicable.

    Related Calculators

    SST Calculator Malaysia →
    Report an issue or outdated rate

    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.

    ComponentOfficial rate
    Energy charge (up to 1,500 kWh)27.03 sen/kWh
    Energy charge (above 1,500 kWh)37.03 sen/kWh
    Capacity charge4.55 sen/kWh
    Network charge12.85 sen/kWh
    Retail chargeRM10/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