Estimate your Pakistan electricity bill from your meter units — slab-wise energy charges, fuel price adjustment (FPA), fixed charges, GST and income tax, all shown in a clear breakdown. Rates are adjustable, so it works for any country.
⚙️ Adjust slab rates (₨ per unit) — tap to edit
Default rates follow NEPRA residential tariffs approximately. Edit any rate to match your latest bill or another country — the calculator works anywhere.
Typical usage:
Estimated total bill
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Estimate only — actual bills vary with protected/non-protected status, lifeline exemptions, quarterly tariff adjustments and your DISCO. Always cross-check with your printed bill. Rates above are adjustable defaults, not official NEPRA figures.
Your meter units are charged slab by slab: the first 100 units at the lowest rate, the next block at a higher rate, and so on up to 700+ units. Then your bill adds fixed charges, the monthly fuel price adjustment (FPA) per unit, meter rent, GST at 18% on energy charges, and income tax on bills above ₨25,000.
Why bills jump suddenly
Crossing a slab boundary raises the rate on the extra units — so 301 units costs noticeably more than 299. Protected consumers (under 200 units for 6 months) pay lower rates, while higher consumption pushes you into non-protected tariffs. FPA also swings month to month with fuel prices.
Tips to lower your bill
Stay under slab boundaries (for example under 200 or 300 units) when possible.
Run heavy appliances (AC, iron, water pump) in off-peak hours.
Replace old fans and bulbs with inverter/efficient models.
Frequently asked questions
How is the Pakistan electricity bill calculated?
Your units are charged slab by slab — the first 100 units at the lowest rate, the next block at a higher rate, and so on. Then fixed charges, fuel price adjustment (FPA), GST at 18% and income tax on larger bills are added.
What is FPA on the electricity bill?
FPA (Fuel Price Adjustment) is a per-unit surcharge that reflects changes in fuel costs for power generation. It varies month to month and is set by NEPRA.
How much is GST on electricity bills in Pakistan?
GST is charged at 18% on the energy charges (after slabs, fixed charges and FPA are included). Lifeline consumers using very few units are exempt from some charges.
Is this electricity bill calculator free?
Yes. It is 100% free with no signup required.
What is a protected electricity consumer?
A domestic consumer who uses under 200 units for six consecutive months. Protected status earns subsidized per-unit slab rates. Exceed 200 units in any month and you lose protection for the next six months, moving to the much higher unprotected tariff.
Why did my bill suddenly double?
The usual causes: crossing from protected to unprotected status (a single 200+ unit month), jumping into a higher slab, or a spike in the monthly fuel price adjustment. Compare this month's units and FPA line against last month's bill to find the culprit.
What is fuel price adjustment (FPA)?
A per-unit surcharge that passes changes in power-generation fuel costs to consumers. It is recalculated monthly, varies with global fuel prices, and applies to every unit you consumed — so it can swing your bill noticeably even when your usage is identical.
What is the difference between protected and unprotected consumers?
Protected consumers are households that have used 200 units or less per month for six consecutive months; they pay subsidised slab rates. Once a household crosses 200 units in a month it becomes unprotected and pays the higher slab rates, and it stays unprotected until it re-qualifies. This calculator uses one progressive slab set with editable rates, so adjust the rates to the protected or unprotected tariff printed on your own bill.
Why does my bill jump so much when I cross 200 or 300 units?
Because Pakistan's domestic tariff is slab-based and the per-unit rate rises steeply by block: units above each threshold are charged at a much higher rate, and GST and adjustments are then calculated on the larger energy charge. At this calculator's default rates, going from 200 to 300 units raises the estimate from about ₨5,511 to ₨9,126 — roughly ₨3,600 more for 100 extra units.
How Pakistan's slab billing works
Pakistan bills domestic consumers on progressive slabs: your units are priced block by block — the first 100 units at the lowest per-unit rate, the next block higher, and so on up to 700+ units. Two tariff classes matter enormously. Protected consumers (under 200 units for six consecutive months) pay subsidized slab rates. Cross 200 units once and you become unprotected, jumping to much higher rates for six months. On top of energy charges come fixed charges, meter rent, the monthly fuel price adjustment (FPA) per unit, GST at 18% on energy charges, and income tax on bills above Rs 25,000.
Worked example: 300 units (illustrative rates)
Suppose the slab rates are Rs 25/unit for the first 100 units and Rs 32/unit for the next 200. Energy charges: (100 × 25) + (200 × 32) = 2,500 + 6,400 = Rs 8,900. Then add FPA for the month (say Rs 2/unit × 300 = 600), fixed charges and meter rent, and 18% GST on the energy portion: 8,900 × 0.18 = Rs 1,602. The taxes alone add roughly a quarter — which is why the final bill always exceeds the "units × rate" mental math.
Practical tips
The cheapest unit is the one you do not use near a slab boundary — 201 units can cost disproportionately more than 199. Guard protected status jealously in summer, run heavy appliances off-peak, and replace old ceiling fans (70W+) with inverter models (30–35W) — fans run all day and dominate many bills.
Time-of-use meters: peak vs off-peak
Many urban consumers now have time-of-use (TOU) meters with two rates: expensive peak hours (typically early evening) and cheaper off-peak the rest of the day. The gap is large — peak units can cost roughly double off-peak — so shifting the iron, water pump, and washing machine out of the evening window cuts bills without cutting comfort. Air conditioners are the exception you cannot fully shift, which is exactly why summer bills explode: cooling demand peaks precisely when electricity is priciest. If your bill shows separate peak/off-peak units, schedule heavy loads for late night and watch the next bill drop.
Estimated bill at common usage levels
Calculated with this tool's default rates (FPA ₨3.5 per unit, fixed charges ₨200, meter rent ₨500, GST 18%):
Units used
Energy charges
Estimated total bill
100 units
₨975
₨2,390
200 units
₨3,270
₨5,511
300 units
₨5,984
₨9,126
500 units
₨11,651
₨16,639
700 units
₨18,105
₨25,081
1,000 units
₨28,797
₨41,411
Tap a usage preset above the calculator to reproduce any row, or edit the slab rates to match your DISCO bill and every figure updates instantly.