Quick Answer
Your electricity bill is not simply units multiplied by one tariff rate. It can include the base energy charge, fuel charges adjustment, quarterly tariff adjustment, fixed charges, GST or other taxes, duties, arrears, previous balances, and provider-specific items. Some items are percentage-based while others are fixed or linked to an earlier consumption period.
What To Check on Your Bill
Why Bill Divided by Units Is Not the Tariff Rate
Final payable amount divided by units gives an effective all-in cost, not the official base unit rate. It mixes energy charges with taxes, adjustments, fixed items, and possibly previous balances.
This effective number can still be useful for budgeting, but it should not be used to claim that the official tariff slab itself equals the all-in result.
How To Compare Two Electricity Bills
Compare billing days, consumed units, tariff category, protected status, peak/off-peak split, energy charge, each adjustment, taxes, fixed charges, and arrears in that order.
If the units are similar but the payable amount changed, the explanation is usually visible in the non-energy lines or the billing period.
Practical Checks
Official Sources
Frequently Asked Questions
What is FCA in a Pakistan electricity bill?
FCA or FPA is a fuel-cost adjustment for a specified reference month. It may appear later than the month in which the electricity was consumed.
What is QTA in an electricity bill?
QTA is a quarterly tariff adjustment approved for a defined period to account for eligible power-sector cost differences.
Why is my effective unit cost higher than the tariff table?
Because total payable amount can include taxes, FCA, QTA, fixed charges, arrears, and other items beyond the base energy charge.