Estimate from the published tariff; your DISCO's bill is the figure that counts.
Bill by units, unprotected consumer
One kilowatt of sanctioned load, filer, July 2026 fuel adjustment and the current quarterly adjustment included. Switch the category above and this table follows.
| Units | Rate | Energy charge | Fixed | Adjustments | Duty + GST + PTV | Total | Per unit |
|---|---|---|---|---|---|---|---|
| 50 | 22.44 | 1,122 | 275 | 129 | 332 | PKR 1,858 | 37.15 |
| 100 | 22.44 | 2,244 | 275 | 258 | 579 | PKR 3,356 | 33.56 |
| 150 | 28.91 | 4,337 | 300 | 387 | 1,023 | PKR 6,046 | 40.31 |
| 200 | 28.91 | 5,782 | 300 | 516 | 1,334 | PKR 7,932 | 39.66 |
| 250 | 33.10 | 8,275 | 350 | 644 | 1,861 | PKR 11,131 | 44.52 |
| 300 | 33.10 | 9,930 | 350 | 773 | 2,214 | PKR 13,267 | 44.22 |
| 350 | 36.46 | 12,761 | 400 | 902 | 2,808 | PKR 16,871 | 48.20 |
| 400 | 36.46 | 14,584 | 400 | 1,031 | 3,194 | PKR 19,209 | 48.02 |
| 450 | 38.95 | 17,528 | 500 | 1,160 | 3,819 | PKR 23,007 | 51.13 |
| 500 | 38.95 | 19,475 | 500 | 1,289 | 4,230 | PKR 25,494 | 50.99 |
| 600 | 40.22 | 24,132 | 675 | 1,547 | 5,233 | PKR 31,587 | 52.64 |
| 700 | 41.85 | 29,295 | 675 | 1,804 | 6,305 | PKR 38,079 | 54.40 |
| 800 | 47.20 | 37,760 | 675 | 2,062 | 8,029 | PKR 48,526 | 60.66 |
| 1000 | 47.20 | 47,200 | 675 | 2,578 | 9,998 | PKR 60,450 | 60.45 |
| Units | Rate | Energy charge | Fixed | Adjustments | Duty + GST + PTV | Total | Per unit |
|---|---|---|---|---|---|---|---|
| 50 | 10.54 | 527 | 200 | 129 | 201 | PKR 1,057 | 21.13 |
| 100 | 10.54 | 1,054 | 200 | 258 | 330 | PKR 1,842 | 18.42 |
| 150 | 10.54 / 13.01 | 1,705 | 300 | 387 | 502 | PKR 2,894 | 19.29 |
| 200 | 10.54 / 13.01 | 2,355 | 300 | 516 | 656 | PKR 3,827 | 19.13 |
| Units | Rate | Energy charge | Fixed | Adjustments | Duty + GST + PTV | Total | Per unit |
|---|---|---|---|---|---|---|---|
| 50 | 3.95 | 198 | 0 | 0 | 74 | PKR 272 | 5.43 |
| 100 | 7.74 | 774 | 0 | 0 | 188 | PKR 962 | 9.62 |
How slab pricing works
Residential electricity in Pakistan is priced in bands, and the band you finish the month in sets the rate for every unit, not just the ones above the line. That is the whole reason a 301-unit bill (PKR 14,580) costs PKR 1,313 more than a 300-unit bill (PKR 13,267): all 301 units move from Rs 33.1 to Rs 36.46, and the fixed charge steps up with them.
| Units in the month | Unprotected, Rs/unit | Fixed, Rs/kW | Protected, Rs/unit | Fixed, Rs/kW |
|---|---|---|---|---|
| 1 to 100 | 22.44 | 275 | 10.54 | 200 |
| 101 to 200 | 28.91 | 300 | 13.01 | 300 |
| 201 to 300 | 33.10 | 350 | — | — |
| 301 to 400 | 36.46 | 400 | — | — |
| 401 to 500 | 38.95 | 500 | — | — |
| 501 to 600 | 40.22 | 675 | — | — |
| 601 to 700 | 41.85 | 675 | — | — |
| Above 700 | 47.20 | 675 | — | — |
| Lifeline, up to 50 | 3.95, no fixed charge | |||
| Lifeline, 51 to 100 | 7.74, no fixed charge | |||
Protected consumers are the one exception. NEPRA's schedule gives them "the benefit of one previous slab": a protected home on 150 units pays the first 100 at Rs 10.54 and only the next 50 at Rs 13.01. To be protected you must have used 200 units or less in each of the last six months. Use 201 once and that month is billed as unprotected, which takes a 200-unit bill from about PKR 3,827 to PKR 9,037, and the next six months stay unprotected. That is the 200-unit cliff.
Lifeline is for single-phase connections with a 1 kW load using 100 units or less, at Rs 3.95 up to 50 units and Rs 7.74 from 51 to 100, with no fixed charge and no fuel or quarterly adjustment. A 100-unit lifeline bill is about PKR 962; the same 100 units unprotected is PKR 3,356.
The fixed charge is per kilowatt of sanctioned load per month and is charged whether or not you use anything, so a 5 kW connection pays five times the figure above. Where no fixed charge applies, the minimum bill is Rs 75 single-phase or Rs 150 three-phase.
What changes from month to month
- The fuel charges adjustment (FCA). NEPRA compares the actual fuel cost of generation in a month against the reference built into the tariff and passes the difference on about two months later. The July 2026 figure, Rs 2.0581 a unit, lands on September 2026 bills; June 2026's was Rs 0.7503 on August 2026 bills. For October 2026, Rs 1.7267 a unit has been requested for August 2026 and is not yet decided. Strictly it is charged on the units you used in the month it is for, not this month's units; the calculator uses this month's as the stand-in.
- The quarterly adjustment (QTA). Capacity and other non-fuel costs, trued up every three months and spread over the following quarter. S.R.O. 1501(I)/2026 sets Rs 0.5194 a unit for September to November 2026.
- The base tariff. Rebased once a year, now in January rather than July. S.R.O. 279(I)/2026 of 12 February 2026 is the current one.
- The taxes. Electricity duty is 1.5% of the variable charge (energy plus adjustments), GST is 18% on the charges and the duty, the PTV fee is Rs 35 flat, and a consumer not on FBR's Active Taxpayers List pays 7.5% income tax once the bill reaches Rs 25,000. A 500-unit non-filer bill is about PKR 27,406 against PKR 25,494 for a filer.
What this calculator cannot know
- Your account's history. Arrears, late-payment surcharges, instalments of an earlier bill, or a detection bill all sit outside the tariff.
- Whether you are really protected. The company decides from your last six months' readings; the calculator takes your word for it.
- The exact FCA base. The fuel adjustment is charged on the units billed in the month it is for (July 2026 for a September 2026 bill). We apply it to the units you enter.
- Provincial differences in duty. 1.5% is confirmed for Punjab and for K-Electric's Sindh customers; other provinces publish it in their own finance acts and we have not verified each one.
- Time-of-use meters. Three-phase 5 kW-and-above connections on peak/off-peak rates (Rs 46.85 and Rs 34.53) are not modelled.
- Company-specific charges. NEPRA's schedule carries no DISCO-specific residential levy, so none is included. If your bill shows one, it is not in the tariff.
Bill calculator by company
Each company has its own page with the same calculator and a units-to-bill table.
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Sources: S.R.O. 279(I)/2026 dated 12 February 2026 · NEPRA decision on the July 2026 fuel charges adjustment · NEPRA decision on the June 2026 fuel charges adjustment · S.R.O. 1501(I)/2026, quarterly adjustment · NEPRA tariff notifications (FESCO page; identical for every DISCO) · FBR Withholding Tax Rates Card, Tax Year 2027 · K-Electric tariff structure page