Electricity bill calculator (estimate)
Enter monthly units (kWh) to see a rough PKR estimate using progressive domestic-style slabs and illustrative taxes/surcharges. Your real bill also depends on your DISCO, meter type, TOU, exact NEPRA tariff, and monthly FPA — always use your official duplicate bill before paying.
Enter your monthly units (kWh)
Use the “units consumed” or “units” line from a recent bill, or estimate total kWh for the month.
Estimated bill (PKR)
Rs 7,757.32
- Energy (slab rates)Rs 5,175
- Financing / FC-style per-unit charge (illustrative)Rs 875
- FPA-style (8% of energy)Rs 414
- Fixed (meter + TV fee — illustrative)Rs 110
- GST (18% — illustrative)Rs 1,183.32
Important: This calculator uses illustrative slab rates and fixed fees for education only. NEPRA revises tariffs; FPA, FC surcharge, GST, TV fee, meter rent, and line items on your actual bill will differ. BijliBillCheck.pk does not guarantee accuracy. For disputes and exact amounts, contact your distribution company (DISCO).
How Pakistan's electricity bill is calculated
A Pakistani electricity bill is not a simple multiplication of units consumed by a single rate. It has several layers, applied in a specific order. Understanding each one helps you verify whether a bill looks right — and use this estimator more effectively.
1. Energy charge (slab-based)
The base energy charge is calculated using NEPRA's progressive slab tariff. Domestic consumers (A-1 tariff) pay a different per-unit rate at each consumption band. The first 100 units are charged at the lowest rate; units from 101 to 200 at a moderately higher rate; units above 200 at progressively higher rates. Critically, crossing a major slab boundary in certain tariff structures reprices the entire bill — not just the extra units — which is why summer bills can jump far more than the proportional increase in usage.
Protected (lifeline) consumers — households that stay at or below 50 units for at least six consecutive months — pay a heavily subsidised rate and are exempt from FPA and most surcharges. This subsidy is the largest single variable in a domestic electricity bill and explains why two households using similar units can receive very different bills.
2. Fuel Price Adjustment (FPA)
The FPA is a monthly per-unit surcharge (or, rarely, a credit) that NEPRA approves based on the actual cost of generating electricity that month. Pakistan's generation mix — RLNG, furnace oil, coal, hydro, and nuclear — has a blended fuel cost that fluctuates with international commodity prices and the PKR/USD exchange rate. When generation is expensive (e.g., high thermal dispatch in summer), the FPA is a charge; when hydro runs high and the fuel mix is cheaper, NEPRA can approve a negative FPA, which reduces your bill below the base tariff. Because of the regulatory cycle, the FPA on your bill typically reflects generation costs from roughly two months earlier.
3. Fixed charges and taxes
On top of the energy charge and FPA, every domestic bill carries:
- General Sales Tax (GST) — currently 18% on the taxable value (energy charge + FPA + some surcharges).
- Electricity Duty — a provincial levy on the energy charge.
- Tariff Rationalisation Surcharge (TRS) — a per-unit amount that cross-subsidises lower-tariff regions.
- Financing Cost surcharge — a per-unit levy that services sector circular debt.
- TV licence fee — a flat monthly amount on residential connections, collected for PTV.
- Meter rent — a small monthly fixed charge on some connection types.
The combined effect of these add-ons is typically a 25–40% increase over the bare energy charge, which is why even a modest unit count can produce a surprisingly large total.
4. Arrears and late payment surcharge
Any unpaid balance from previous months appears as arrearsand is added to the current month's charges. If a bill is not paid by the due date, a Late Payment Surcharge (LPS) is added on the next bill. LPS is calculated as a percentage of the outstanding amount. The combination of arrears and LPS can make a bill appear much higher than the current month's consumption alone would justify.
How to use this calculator accurately
Enter the units (kWh) shown on your electricity bill — not an estimate. Your actual units consumed for the month are printed on the bill under “Units Consumed” or the equivalent label. The calculator then applies illustrative slab rates and fixed charges to produce an approximate total. Use the result to sanity-check whether the arithmetic on your bill makes sense, or to estimate next month's bill based on your current meter reading.
Do not use this calculator for payment, dispute, or tax purposes. NEPRA tariffs change periodically, and the FPA rate — which this calculator uses as a static illustrative figure — changes every month. For the exact amount you owe, always use your official duplicate bill from the PITC portal.
Understanding your result
If the calculator's estimate is significantly lower than your actual bill, the most common reasons are: a positive FPA higher than the illustrative value used here, you have crossed into a higher slab than the calculator's model assumes, your tariff category is commercial or industrial rather than domestic, or arrears and LPS are included in the bill total.
If the estimate is significantly higher than your actual bill, you may be on a protected (lifeline) tariff, or a temporary NEPRA subsidy is in effect, or your DISCO has a tariff structure that differs from the national illustrative model used here.
Related guides: Pakistan electricity slab rates explained · What FPA means on your bill · Understanding your electricity bill