Electricity Bill Calculator

What Is the Electricity Bill Calculator?

This tool estimates your monthly electricity bill in Pakistan using NEPRA’s progressive tariff slab system. You enter the number of units consumed (kWh) and your distribution company, and the calculator applies the correct slab rates to compute your bill including the fixed charges and all applicable government levies.

Pakistan’s electricity tariff is not a flat rate — it uses a tiered structure where higher consumption falls into progressively more expensive slabs, penalizing heavy users significantly.

How to Use This Calculator

1. Enter your units consumed (kWh) from your electricity meter reading or last bill.
2. Select your distribution company (LESCO, HESCO, MEPCO, IESCO, etc.).
3. Select your consumer type (domestic protected or unprotected).
4. Press the Calculate Electricity Bill button. The tool will break down your base unit costs, standard fixed charges, applicable GST, and the final estimated amount payable.

Protected consumers use 200 or fewer units per month and receive a subsidized rate. Unprotected consumers using above 200 units pay higher rates across all their consumption, not just the excess.

How Pakistan Electricity Tariff Works

Worked Example (NEPRA 2025-26 Rates)

Domestic unprotected consumer using 400 units in LESCO:

• Units 1–100 at PKR 7.74 = PKR 774
• Units 101–200 at PKR 10.06 = PKR 1,006
• Units 201–300 at PKR 12.15 = PKR 1,215
• Units 301–400 at PKR 16.09 = PKR 1,609
• Energy charges: PKR 4,604
• Fixed charge (PKR 75) + GST + other levies ≈ PKR 900
• Estimated total: ~PKR 5,500

Practical Use Cases

• Budget forecasting: Estimate your bill before it arrives by tracking your meter reading mid-month. If you are approaching the next slab boundary, reducing usage by 20–30 units can disproportionately lower your bill. To convert units for accurate bill estimation, use our Unit Converter.
• Appliance cost analysis: Calculate the cost of running specific appliances (1kWh = cost at your current slab rate). An AC running 8 hours/day at 2kW = 16 kWh/day = 480 units/month — pushing you into the highest slabs.
• Solar investment decision: Use this to quantify exactly how much your current grid consumption costs, then compare against solar installation payback periods.

Common Mistakes to Avoid

• Confusing protected and unprotected status: Using 201 units makes you unprotected, meaning ALL your units (not just the extra one) are billed at higher rates. Staying under 200 units is a critical threshold.
• Ignoring fixed charges and taxes: A bill is never just energy charges. Fixed charges, GST (17%), Electricity Duty, and FPA surcharges add 20–30% on top of the base energy cost.
• Not accounting for seasonal variation: Summer AC usage can triple your units. Budget for June–August as your highest-bill months and plan accordingly.

Accuracy Notes

Slab rates in this calculator are based on NEPRA tariff determinations for 2025-26. Rates are subject to quarterly fuel price adjustments (FPA) and annual tariff revisions. Actual bills may include additional charges specific to your distribution company (meter rent, wheeling charges). Always cross-verify with your official DISCO bill.

Why Your Electricity Bill Jumps Unexpectedly — The Slab System Explained

Pakistan's NEPRA tariff is a tiered slab system — and it punishes high consumers non-linearly. Most people do not realise that crossing a usage threshold does not just make the extra units more expensive. For some tariff categories, it changes the rate applied to ALL your units, not just the excess ones.

This creates a "slab cliff" effect. A family using 299 units pays at the lower slab rate on all 299 units. If they use 301 units — crossing the 300-unit threshold — the higher slab rate applies to all 301 units. The extra 2 units of usage can trigger a bill increase of several hundred rupees.

Understanding which slab you are in — and how close you are to the next threshold — is the most valuable thing this calculator tells you. Check your current estimated units against the slab boundaries before the end of your billing cycle.

The Hidden Costs in Every Electricity Bill

The NEPRA unit rate is only one component. Your actual bill includes multiple charges that add 30-50% on top of the base energy cost:

• Fuel Price Adjustment (FPA): A quarterly adjustment based on actual vs projected fuel costs. Can be positive (adding to your bill) or negative (a credit). This alone can swing bills by Rs. 2-5/unit.
• Electricity Duty: A provincial tax levied as a percentage of the electricity bill. In Punjab, this is 1.5% of the billed amount.
• TV licence fee: Rs. 35/month — still charged on residential bills regardless of whether you own a television.
• Meter rent: Monthly charge for the meter hardware, typically Rs. 15-25.
• General Sales Tax (GST): 17% on the total bill including all above charges. This is the largest additional cost for higher-slab consumers.
• Income tax deduction: For consumers above certain thresholds, withholding tax is deducted directly on the bill.

The calculator above shows your estimated base energy cost. Your actual bill will be 30-50% higher due to these additional charges.

How to Actually Reduce Your Bill — Practical Decisions, Not Generic Advice

Generic advice says "use less electricity." More useful is understanding which appliances drive the majority of your bill:

• Air conditioning: A 1.5-ton split AC running 8 hours/day at 1.5 kW consumes 360 units/month. At Rs. 35-50/unit in higher slabs, this is Rs. 12,600-18,000 in AC cost alone. Setting to 26°C instead of 22°C reduces compressor runtime by 20-30%.
• Electric water heating (geysers): A 2kW geyser running 2 hours/day consumes 120 units/month. Solar water heaters pay back their cost in 18-24 months in most Pakistani cities given current tariff rates.
• Refrigerators: Old single-door refrigerators consume 50-80 units/month. Inverter compressor models consume 25-40 units. The annual saving of 300-480 units at Rs. 45/unit = Rs. 13,500-21,600/year.
• The slab management strategy: If you are 50-80 units below the next slab threshold, you have room to run your AC slightly more or extend usage hours without crossing into the higher pricing tier. If you are 10-20 units away from crossing, consider reducing usage for the last few days of your billing cycle.

Real Monthly Scenario: Low vs High Usage Household

Low usage household (200 units/month): Fans, LED lights, refrigerator, phone charging. At NEPRA domestic rates: base energy charge ≈ Rs. 5,200. With all additional charges and taxes: approximately Rs. 7,500-8,500 total bill.

High usage household (700 units/month): Above plus 2 ACs, electric geyser, washing machine. At higher slab rates: base energy charge ≈ Rs. 28,000-35,000. With all additional charges, taxes, and FPA: approximately Rs. 42,000-52,000 total bill. For winter heating, you can estimate Sui Northern gas charges with our SNGPL Calculator.

The key insight: the high-usage household uses 3.5× more electricity but pays 5-6× more in total bill cost — because every extra unit is at a higher rate AND taxed on a larger base amount.

Frequently Asked Questions