Choose the right scope
This calculator uses the GoP notified rates in Annex A-1 of S.R.O. 279(I)/2026, dated 12 February 2026. It does not fetch a current monthly tariff, inspect your account, or determine eligibility. Later adjustments can change the payable amount without changing this base calculation.
- Non-ToU residential options apply below 5 kW sanctioned load.
- Lifeline is limited here to an eligible single-phase connection up to 1 kW and at most 100 units. Low use alone does not prove eligibility.
- Protected status needs the utility’s classification; do not select it just because this month is below 200 units.
- ToU needs at least 5 kW sanctioned load, separate peak/off-peak units and the actual MDI.
- Commercial, industrial, agricultural, temporary and other schedules are outside this calculator.
The rates used here
| Residential category / monthly units | Energy rate (Rs/kWh) | Fixed rate (Rs/kW/month) |
|---|---|---|
| Eligible lifeline · 0–50 | 3.95 | None |
| Eligible lifeline · above 50–100 | 7.74 | None |
| Protected · 0–100 | 10.54 | 200 |
| Protected · above 100–200 | 13.01 | 300 |
| Unprotected · 0–100 | 22.44 | 275 |
| Unprotected · above 100–200 | 28.91 | 300 |
| Unprotected · above 200–300 | 33.10 | 350 |
| Unprotected · above 300–400 | 36.46 | 400 |
| Unprotected · above 400–500 | 38.95 | 500 |
| Unprotected · above 500–600 | 40.22 | 675 |
| Unprotected · above 600–700 | 41.85 | 675 |
| Unprotected · above 700 | 47.20 | 675 |
| Residential ToU | 46.85 peak / 34.53 off-peak | 675 |
Only protected residential consumers receive one previous slab’s benefit under the schedule note. Unprotected and lifeline calculations use the applicable band’s rate for all units. Non-ToU fixed charges use sanctioned load; ToU fixed charges use the higher of 50% of sanctioned load and actual MDI. An eligible single-phase lifeline connection with zero consumption has the Rs. 75 minimum customer charge used here.
Why 250 unprotected units give Rs. 8,975
For 250 units and 2 kW sanctioned load: energy is 250 × Rs. 33.10 = Rs. 8,275. Fixed charges are 2 × Rs. 350 = Rs. 700. The resulting base estimate is Rs. 8,975 before other bill lines. This example does not distribute those units across the lower unprotected bands.
For 150 protected units at 2 kW: (100 × 10.54) + (50 × 13.01) + (2 × 300) = Rs. 2,304.50. The category changes the method as well as the rate.
Small fractional inputs can create rounding differences from utility billing systems. The calculator displays two decimals and cannot reconcile account-specific rounding or billing adjustments.
Add context before comparing with a real bill
Match the billing period and category first. Then examine the additional charge lines and old balance. A gap between this estimate and the total due is not, by itself, evidence of overbilling. The charge-line guide shows how to separate these components; the complaint guide helps prepare evidence if a particular line is disputed.
Sources & scope
Calculation source: Annex A-1, printed page 15/51 (gazette PDF page 18). Read the rates and the notes together. This tool is tied to the named schedule, not a promise that every future bill uses it.
- NEPRA / Federal Gazette: S.R.O. 279(I)/2026Notification dated 12 February 2026. Annex A-1, PDF page 18: residential rates and calculation notes.
- NEPRA rationalization decision, 11 February 2026Annex A-1, PDF page 17 (printed 15/51). Use the GoP applicable column, not the determined-cost column.
- NEPRA tariff and adjustment registerCheck newer notifications and the adjustment period; this site’s calculator is a named base-tariff estimate.