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Electricity bill calculator

Estimate your monthly electricity bill in Pakistan from the units (kWh) you used. It applies the NEPRA residential slab rates for protected and unprotected consumers, then adds the fuel price adjustment, electricity duty, 18% GST and the PTV fee — each one editable, because they change. Works for WAPDA/DISCOs and K-Electric, which share the same slab rates.

1Your usage

The units on your meter reading for the month. This is the main thing that drives the bill.

Protected = 5 kW or less and 200 units or fewer every month for the last 6 months. One month over 200 makes you unprotected for the next 6 months.

2Rates and charges (editable)

FPA / FCA, set by NEPRA each month on the actual fuel mix. Often around 2–3.5 per unit, and sometimes negative. Enter the figure on your bill.

Fixed/minimum charges on your sanctioned load (about 200–675 per kW/month) plus meter rent, if any. Leave as 0 if you're not sure.

%

A provincial duty on the energy charge, usually around 1.5%. It varies by province.

%

General Sales Tax on the bill. The standard rate is 18%.

A fixed TV licence fee, usually 35 per month. Set it to 0 if it's not on your bill.

Anything else on the bill — financing cost surcharge, NJ surcharge, arrears. Enter the total if you want it included.

Your results

Your results appear here

Type your measurements in the empty boxes. Still needed:

  • Units used this month (kWh)
  • Fuel price adjustment (per unit)
  • Electricity duty (%)
  • GST (%)
  • Free
  • No sign-up
  • PDF & CSV

How to estimate your electricity bill

  1. 1Enter the units (kWh) used this month from your meter reading.
  2. 2Choose whether you are a protected or an unprotected consumer.
  3. 3Check the fuel price adjustment, fixed charges, duty, GST and PTV fee — the defaults are typical, but your bill is the exact source.
  4. 4Read the estimated bill, the slab energy charge and each added charge, plus the average cost per unit.

How a Pakistan electricity bill is worked out

  1. 01Energy charge = units costed through the NEPRA slabs for your consumer type
  2. 02Up to 300 units (unprotected) the slabs are telescopic; above 300, the whole use is charged at one higher slab rate
  3. 03Fuel adjustment = FPA per unit × units
  4. 04Duty = duty% of the energy charge · GST = GST% of (energy + FPA + fixed + duty + other)
  5. 05Bill = energy + FPA + fixed + duty + other + GST + PTV fee

Pakistan prices household electricity in slabs. Protected consumers — those on 5 kW or less who stay at or below 200 units every month — pay subsidised rates (about 10.54 for the first 100 units and 13.01 for the next 100). Everyone else is "unprotected" and pays higher rates that rise with use.

For unprotected consumers up to 300 units the slabs are telescopic: the first 100 units cost one rate, the next 100 a higher rate, and so on. But cross 300 units and the rule changes — the whole month's use is charged at a single, higher slab rate. That is why a bill jumps sharply once you pass 300 units, and why cutting back from just over 300 to just under can save a lot.

On top of the energy charge the bill adds the fuel price adjustment (a per-unit figure NEPRA sets each month), fixed charges on your sanctioned load, a small provincial electricity duty, 18% GST on the combined charges, and the fixed PTV licence fee. These change over time and vary a little by area, so the calculator leaves them editable; enter the numbers from your own bill for the closest estimate. The same slab rates apply whether you are on a DISCO (WAPDA area) or K-Electric in Karachi.

Electricity bill calculation example

An unprotected home using 300 units has an energy charge of 8,445 from the slab rates.

Adding the fuel adjustment, duty, GST and PTV fee brings the estimated bill to 11,211.58 — about 37.37 per unit all in.

Good to know

  • The biggest saving is staying under 300 units if you can — crossing it charges your whole use at a higher rate.
  • Read the FPA (fuel price adjustment) line from your latest bill and enter it; it changes every month and can even be negative.
  • Protected status needs you to stay at or below 200 units every month for six months — one spike loses it for half a year.
  • To cut units, the big users are air conditioning, electric heating, water motors and old refrigerators — not lights.
  • If your bill is far above this estimate, check for fixed charges on a high sanctioned load, arrears, or a financing surcharge, and enter them in "other charges".

Electricity bill calculator — common questions

How is the electricity bill calculated in Pakistan?

The units you use are costed through NEPRA's residential slab rates, then the fuel price adjustment, fixed charges, a provincial electricity duty, 18% GST and the PTV fee are added. Protected consumers (≤200 units) pay subsidised rates; everyone else pays higher unprotected rates.

Why does my bill jump so much after 300 units?

For unprotected consumers, use up to 300 units is telescopic (each slab charged separately), but above 300 the whole month's use is billed at a single, higher slab rate. So going from just under to just over 300 units can raise the bill sharply.

What is the difference between protected and unprotected consumers?

Protected consumers have a sanctioned load of 5 kW or less and have stayed at or below 200 units every month for the last six months; they get subsidised rates. Crossing 200 units once makes you unprotected — the higher rates — for the next six months.

Is the per-unit rate the same for K-Electric and WAPDA?

Yes. Under the uniform consumer tariff, K-Electric (Karachi) and the WAPDA DISCOs use the same residential slab rates. Only the monthly fuel and quarterly adjustments differ slightly.

What is the fuel price adjustment (FPA)?

A per-unit charge NEPRA sets each month to reflect the actual cost of the fuel used to generate electricity. It is added on top of the slab rates, is often a few rupees per unit, and can occasionally be negative. Enter the figure from your bill.

Why is this an estimate and not my exact bill?

The fuel and quarterly adjustments, fixed charges, duty and surcharges change over time and vary by area and sanctioned load. Enter the figures from your own bill in the editable boxes for the closest match.

Sources

Formulas last reviewed: September 30, 2026 ·How we check our formulas

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