Why did my bill jump when I used slightly more units?

For unprotected consumers the whole consumption moves to the higher slab rate. Going from 300 to 301 units changes the rate applied to all 301 units.

Fuel Price Adjustment passes on the difference between the fuel cost assumed in the tariff and the actual cost. It changes monthly and can be negative.

How do I become a protected consumer?

Keep consumption at or below 200 units for six consecutive months. Exceeding 200 in any month resets the count.

Is income tax charged on electricity bills?

Withholding tax applies on higher bills, and at a higher rate for non-filers. It is not included here.

Utilitiesv1.0.0Last reviewed 2 Oct 2026

Electricity Bill Calculator (LESCO, IESCO, MEPCO, K-Electric)

Electricity bill calculator for LESCO, IESCO, MEPCO, GEPCO, FESCO, PESCO and K-Electric. Enter units and sanctioned load to see your bill at the tariff in force since February 2026 (SRO 279): per-unit slab rate, the fixed charge per kW, GST, FC surcharge and duties.

Estimated monthly billRs 17,468

Rates last reviewed 2 Oct 2026. How this is calculated

350 units at the unprotected tariff cost Rs 12,761 in energy charges; taxes and surcharges add Rs 4,707 (37%). That is Rs 50 per unit all-in.

Energy charge

All 350 units @ 301–400 slab × Rs 36.46: Rs 12,761
Energy charge: Rs 12,761

Surcharges & taxes

Fuel price adjustment (350 × Rs 0.00): Rs 0
FC surcharge (350 × Rs 3.23): Rs 1,131
Fixed charge (2 kW × Rs 400): Rs 800
Electricity duty (1.5%): Rs 208
GST (17%): Rs 2,533
PTV licence fee: Rs 35
Total bill: Rs 17,468

Warning: Quarterly tariff adjustments, income-tax withholding for non-filers, and arrears are not included. Treat this as a close estimate, not your exact bill.
Warning: Unprotected consumption is billed whole at the rate of the slab reached (no previous-slab benefit since February 2026), so staying under 100, 200 or 300 units cuts the bill sharply.

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How this is calculated

Your bill = energy charge (units × slab rate) + fixed charge (Rs 275 to 675 per kW of sanctioned load, by slab) + fuel price adjustment + financing-cost surcharge + electricity duty (provincial, 1.5% of the variable charge) + GST (17%) + fixed fees. Rates are the uniform tariff notified by SRO 279(I)/2026, in force since 12 February 2026.

NEPRA sets a uniform residential tariff for all distribution companies (LESCO, IESCO, GEPCO, FESCO, MEPCO, PESCO, HESCO, SEPCO, QESCO, TESCO and K-Electric). Protected consumers, those who have used 200 units or less for six consecutive months, pay heavily subsidised slab rates. Everyone else is unprotected.

For unprotected consumers the entire consumption is billed at the rate of the slab reached (only protected consumers keep the previous-slab benefit), which is why crossing 100, 200 or 300 units produces a jump in the bill. Lifeline consumers (100 units or less) pay no fixed charge but a minimum charge of Rs 75 (single phase) or Rs 150 (three phase).

Frequently asked questions

Why did my bill jump when I used slightly more units?: For unprotected consumers the whole consumption moves to the higher slab rate. Going from 300 to 301 units changes the rate applied to all 301 units.
What is FPA?: Fuel Price Adjustment passes on the difference between the fuel cost assumed in the tariff and the actual cost. It changes monthly and can be negative.
How do I become a protected consumer?: Keep consumption at or below 200 units for six consecutive months. Exceeding 200 in any month resets the count.
Is income tax charged on electricity bills?: Withholding tax applies on higher bills, and at a higher rate for non-filers. It is not included here.

Sources

NEPRA uniform residential tariff A-1, SRO 279(I)/2026 of 12 February 2026 (the table as published in IESCO's tariff guide): NEPRA

Version 1.0.0 · reviewed 2 Oct 2026. Rates change with the Federal Budget and regulator notifications; we update this tool when they do. Confirm with the primary source before making financial decisions.

Topics:K-Electric LESCO NEPRA