Important: this is not the official payable bill
This calculator is only a practical estimate. Your real payable amount is the amount printed on the official GEPCO/PITC bill. If you need to pay today, open the actual bill through the GEPCO bill checker, the official GEPCO duplicate bill page, or the PITC bill portal.
I built this calculator for the situation most people are actually in: you know roughly how many units you used, the paper bill has not arrived yet, and you want a realistic idea before salary day. It is useful for planning, but it cannot see your live PITC account, your arrears, your protected status history, or the exact adjustment rows on the official bill.
The rate assumptions were checked against NEPRA's official GEPCO tariff listing and the February 2026 XWDISCO tariff rationalization decision. NEPRA's GEPCO page also lists fuel charge adjustment and quarterly tariff adjustment decisions, which is exactly why the estimate should be treated as a guide rather than a payment figure.
Formula Used by the Calculator
The calculator first estimates the base electricity cost, then adds a transparent approximation for common charges. In plain English:
Estimated total = base tariff + fixed charge + FC surcharge + electricity duty + GST estimate + TV fee
- Base tariff: units multiplied by the selected residential or commercial rate.
- Fixed charge: estimated from sanctioned load and the relevant tariff assumption.
- FC surcharge: estimated at Rs. 0.43 per kWh for non-lifeline style estimates.
- Electricity duty: estimated at 1.5% of base cost.
- GST estimate: estimated at 18% on eligible base/surcharge lines.
- TV fee: estimated at Rs. 35 for residential and Rs. 60 for commercial.
Rates Used for Residential Estimates
For standard single-phase residential estimates, the calculator uses the current unprotected residential slab assumptions below. Protected and lifeline consumers are different, so if your bill says protected or lifeline, do not compare the estimate too strictly.
Three-Phase and Commercial Assumptions
For residential Time of Use estimates, the calculator uses Rs. 46.85 per peak unit and Rs. 34.53 per off-peak unit, with the fixed charge based on 50% of sanctioned load. For the basic commercial option, it uses the A-2 less-than-5kW assumption of Rs. 37.44 per unit plus Rs. 1,000 fixed charge.
If your commercial connection is 5kW or above, has Time of Use billing, or belongs to a special tariff category, use this only as a rough sense check. Your official bill category matters more than any public calculator.
Why the Estimate Can Be Different From PITC
This is the honest part. Even with correct base rates, GEPCO bills can move because of rows the calculator cannot know:
- Protected or lifeline status: depends on official billing history and category rules.
- FCA/FPA: fuel charge adjustment is decided separately and can apply with a delay.
- QTA: quarterly tariff adjustment can appear for notified periods.
- Arrears or credit: previous unpaid amount or overpayment credit changes the payable total.
- Late payment surcharge: if paid after due date, the official bill may show a higher amount.
- Exact tax treatment: GST and duties can apply differently across bill lines and notification periods.
Official Sources Checked
Sources were checked on June 11, 2026. Because electricity tariffs are notification-driven, this page should be reviewed whenever NEPRA publishes a new GEPCO/XWDISCO tariff, FCA, or quarterly adjustment decision.
- NEPRA GEPCO tariff page: official GEPCO tariff, FCA, QTA, and decision listing.
- NEPRA February 2026 tariff rationalization decision: source for the residential, TOU, and commercial rate assumptions used here.
- S.R.O. 279(I)/2026: official February 2026 notification linked from NEPRA.
- NEPRA March 2026 FCA decision: example of why monthly FCA/FPA can change separately from base tariff.
- S.R.O. 459 XWDISCOs 2nd Quarter FY 2025-26: example of quarterly adjustment handling.
- Official GEPCO duplicate bill page and PITC bill portal: final bill lookup sources.
Best Way to Use This Calculator
Use the calculator before the bill arrives to plan your cash flow. Once the official bill is available, treat PITC as final. If the official amount looks unusually high, compare your meter reading, units, arrears, FPA/FCA row, QTA row, and protected/unprotected status. Our GEPCO bill reading guide walks through those fields one by one.