LESCO Bill Calculator: How to Calculate Your Monthly Electricity Bill

Your LESCO electricity bill is not just the number of units you used multiplied by a single rate. It is a combination of tiered slab charges, a fixed monthly fee, fuel price adjustment, electricity duty, and income tax. Understanding how these pieces add up helps you estimate your bill, spot errors, and find ways to reduce your monthly cost.

How LESCO Bills Are Calculated

LESCO bills domestic consumers using a slab (tiered) rate system set by NEPRA (National Electric Power Regulatory Authority). This means the first 100 units are charged at a lower rate, the next 100 units at a slightly higher rate, and so on. Consumers who use more electricity pay a progressively higher rate.

On top of the slab charges, your bill includes:

• Fixed charges — a flat monthly amount regardless of consumption
• Fuel Price Adjustment (FPA) — a monthly variable charge based on fuel costs in power generation
• Electricity duty — a percentage tax levied by the provincial government
• Income tax — applied at different rates depending on your consumer type
• TV license fee — a small flat fee collected on behalf of PTV

LESCO Domestic Slab Rates (Indicative)

NEPRA periodically revises tariff rates. The following represents the general slab structure for domestic consumers that has been in effect. Always check the NEPRA or LESCO website for the latest approved rates.

Important: Once your monthly consumption crosses into a higher slab, all units are re-billed at that slab's rate — not just the units above the threshold. This is why jumping from 299 to 310 units can cause a noticeably larger increase in your bill than expected. This is called the "slab carryback" mechanism in LESCO billing.

Understanding the Charges on Your Bill

1. Energy Charges (Tariff)

This is the base charge calculated using the slab rates above. It is the primary component of your bill.

2. Fixed Charges

A flat monthly charge applied to every consumer regardless of how many units they use. The amount varies by consumer category — domestic, commercial, or industrial.

3. Fuel Price Adjustment (FPA)

The FPA is a monthly variable surcharge based on the actual cost of fuel used to generate electricity that month. It can be positive (you pay more) or negative (you get a credit). FPA is set monthly by NEPRA and applies per unit consumed.

4. Electricity Duty

A percentage-based provincial tax on your energy charges. It is collected by LESCO and passed on to the provincial government.

5. Income Tax

Applied under Pakistan's tax laws. The rate depends on whether you are a tax filer or non-filer, and your consumer category. Non-filers typically pay a higher withholding rate.

6. TV License Fee

A small fixed fee collected on behalf of Pakistan Television Corporation (PTV). It applies to most domestic connections.

Worked Example: Calculating a 300-Unit Bill

Let us walk through a simplified estimate for a domestic consumer who used 300 units in one month. The actual amounts depend on current NEPRA-approved rates, but this example shows the structure:

Step 1 — Calculate Energy Charges

• Units 1–100: billed at Slab 1 rate
• Units 101–200: billed at Slab 2 rate (but since total exceeds 200, reassess based on slab carryback rules)
• Units 201–300: billed at Slab 3 rate

Because the total is 300 units (which falls into Slab 3 in the carryback system), all 300 units may be recalculated at the Slab 3 rate. This is what surprises many consumers.

Step 2 — Add Fixed Charges
Add the flat monthly fixed charge for your consumer category.

Step 3 — Add FPA
Multiply the current month's FPA rate (per unit) by your 300 units.

Step 4 — Add Taxes
Apply electricity duty (percentage of energy charges) and income tax (percentage based on filer status).

Step 5 — Add TV Fee
Add the flat PTV license fee.

Total = Energy Charges + Fixed Charges + FPA + Electricity Duty + Income Tax + TV Fee

Use MeraBill.pk to check your actual bill breakdown — it shows each line item clearly so you can compare against your estimate.

Tips to Reduce Your Monthly Units

Reducing consumption is the most effective way to lower your LESCO bill. Here are practical steps:

• Use energy-saving bulbs — replace old tube lights and incandescent bulbs with LED alternatives
• Check your AC settings — set air conditioning to 26°C or above; every degree lower increases consumption significantly
• Unplug standby devices — TVs, chargers, and appliances on standby still draw power
• Use fans instead of AC when the temperature is manageable
• Run washing machines with full loads to maximize efficiency per cycle
• Check for meter issues — if your bill suddenly spikes, request a meter inspection through LESCO (dial 111-000-118)
• Monitor your daily usage — some smart meters allow real-time consumption tracking

Staying below 200 or 300 units per month places you in a lower slab and can significantly reduce your bill compared to crossing into the next tier.

What Is the Difference Between Domestic and Commercial Rates?

Domestic consumers are charged the slab rates described above, with lower rates for the first 100 units to protect low-income households.

Commercial consumers (shops, offices) do not benefit from the low-slab protected tariff. They are billed at higher flat commercial rates set by NEPRA, plus their own fixed charges and applicable taxes.

Industrial consumers have separate three-phase tariffs that factor in demand charges (kVA) in addition to consumption (kWh).

If your meter is incorrectly categorized — for example, a home registered as commercial — you could be overpaying. Contact LESCO to verify and correct your consumer category.

FAQ

What is the NEPRA slab rate for domestic consumers?

NEPRA sets and revises slab rates for domestic electricity consumers across all DISCOs (Distribution Companies) including LESCO. The rates are tiered — starting from a low protected rate for the first 100 units and stepping up through five slabs for higher usage. For the most current approved rates, visit NEPRA's official website at nepra.org.pk or check the tariff section on lesco.net.pk.

What is FPA in my electricity bill?

FPA stands for Fuel Price Adjustment. It is a monthly variable charge (or credit) added to your bill based on the actual fuel cost incurred by power generation companies that month. If the fuel cost was higher than the base tariff assumed, the FPA is positive and you pay extra. If lower, the FPA can be negative, which reduces your bill. NEPRA determines the FPA each month and DISCOs including LESCO apply it automatically.

Why did my LESCO bill double even though I used only slightly more units?

This is usually because your consumption crossed into a higher slab. Under LESCO's billing structure, when your total units exceed a slab boundary, the rate for the entire month's consumption is recalculated at the higher slab — not just the extra units. Crossing from 200 to 201 units, or from 300 to 301 units, can cause a significant jump in your bill due to this mechanism.

How can I tell if my LESCO meter is faulty?

Signs of a faulty meter include bills that are dramatically higher or lower than recent months for no apparent reason, or a meter display that is stuck or cycling erratically. If you suspect a fault, call 111-000-118 to request a formal meter inspection. LESCO engineers will test the meter and if it is found to be faulty, your bill will be adjusted accordingly.