This calculator estimates your monthly electricity bill in Pakistan using the slab-based tariff schedule that NEPRA publishes for each DISCO. Enter your monthly units consumed (visible on your previous bill or DISCO online portal), select your connection type and DISCO, and see an itemised estimate.
Estimate Your Monthly Electricity Bill
How Pakistani electricity tariffs actually work
Pakistani electricity tariffs follow a progressive slab structure. The first 100 units cost a relatively low per-unit rate; consumption above 100 units moves the entire bill to a higher slab rate. The slabs typically step at 100, 200, 300, 700, and above 1,000 units, with each slab carrying a meaningfully higher per-unit charge than the previous one. The slab jumps are the single largest driver of bill variability for households whose monthly consumption hovers near a boundary.
Beyond the energy charges, every Pakistani residential electricity bill includes several fixed components — TV licence fee, electricity duty (a small percentage of the energy charge), GST at 17%, and a fuel price adjustment that varies monthly based on the cost of fuel used for generation. The fuel price adjustment can swing the total bill by 10% or more in months when fuel prices spike. The calculator includes typical values for these components but the live values on your physical bill will reflect the exact month's rates.
The methodology behind this estimator
The calculator uses NEPRA's most recently published consumer-end tariff schedule, with separate rate tables for each DISCO. When you enter your units and DISCO, the JavaScript walks through each applicable slab from the lowest upward, applies the slab rate to your usage, and sums the energy charges. Fixed components — TV licence fee, electricity duty, GST, and an estimated fuel price adjustment — are added on top to produce the total estimated bill.
The estimate is typically accurate to within 5–10% of an actual bill for standard residential connections. Larger discrepancies usually indicate either an unusual fuel price adjustment that month, back-billing from a previous under-reading, or a recent NEPRA tariff revision that hasn't yet been reflected in this calculator's rate tables. Recheck rates on the NEPRA website if your estimate diverges significantly from the actual bill you receive.
Tips for reducing your monthly electricity bill
The single largest lever for most Pakistani households is staying below the next slab boundary. If you consistently bill at 305 units, dropping to 295 units shifts your entire monthly usage to a lower per-unit rate — the savings can be Rs. 1,500 to Rs. 2,500 a month. Track your meter weekly during the last week of the month; turn off discretionary loads (ironing, geyser pre-heat, decorative lighting) on the final days if you're approaching a boundary.
The second large lever is heat-pump and appliance efficiency. A single old refrigerator can consume 40–60 units a month; replacing it with an inverter model saves 25–35 units. An old air conditioner running 6 hours a day consumes around 150 units a month; an inverter AC at the same usage profile saves 50–70 units. Across multiple appliances, these efficiency gains can drop a household's monthly usage by an entire slab.
Common questions about electricity bill estimation
Why does the same number of units cost more on some bills than others?
Pakistani electricity tariffs are slab-based — the rate per unit increases sharply at certain consumption thresholds. The first 100 units cost one rate, 101 to 200 units cost a higher rate, 201 to 300 even higher, and so on. Crossing a slab boundary by even one unit means that the entire usage gets billed at the higher slab rate, not just the units over the threshold. This 'slab jump' explains why a 301-unit bill can be 30–40% more than a 299-unit bill. Households trying to stay within a cheaper slab sometimes turn off discretionary appliances near month-end to avoid crossing the next slab.
Does this calculator include fuel price adjustment, GST, and TV licence fee?
The calculator estimates the energy charges based on NEPRA-published slab rates and adds typical fixed components — TV licence fee (Rs. 35), GST (17%), Electricity Duty (1.5%), and a placeholder for fuel price adjustment that varies month-to-month. The actual bill on your physical paper or DISCO portal will include the precise fuel price adjustment for that month, plus any back-billing or arrears your account carries. Treat this calculator as an estimate accurate to within 5–10% of your actual bill for typical residential use.
How does K-Electric's tariff differ from the DISCOs covered by NEPRA's uniform schedule?
K-Electric (Karachi) operates as a private utility with its own tariff schedule, separately approved by NEPRA. The slab structure follows the same general pattern as other DISCOs but the rates per slab differ slightly — K-Electric's residential tariffs have historically been around 5–10% different from the national average across various slabs. The other major DISCOs (LESCO, IESCO, MEPCO, FESCO, GEPCO, PESCO, HESCO, SEPCO, QESCO, TESCO) follow the uniform tariff schedule that NEPRA sets centrally for the public DISCOs. The calculator applies tariff data per-DISCO so the estimate reflects your specific area.
If I install solar panels, how does that change what shows on my bill?
Solar installations work two ways: net-metered (excess generation credited at the buyback rate) or off-grid (no grid interaction). For net-metered solar, the bill shows three components — gross consumption from the grid, units exported back from your solar, and net units billed (the difference). If your solar exports more than you import in a month, your net bill can be zero or a credit, though you'll still pay fixed charges and taxes. The savings calculator on this site walks through the payback maths in detail.
Why is my bill suddenly twice what I expected when usage barely changed?
Three common causes. First, you crossed a slab boundary that pushed all your units to a higher rate — check the previous month's units against the slab thresholds. Second, your DISCO under-billed in earlier months and is now back-billing — look for an 'arrears' or 'previous balance' line on the bill. Third, the fuel price adjustment for that month was unusually high (the regulator approves quarterly FPA revisions; some months see significant jumps). Compare the per-unit rate on the current bill against the previous bill to identify which factor moved.