Sources and Methodology

We separate stable formulas from volatile rates.

FBR

Salary tax logic is intended for Tax Year 2027, FY 2026-27, and should be verified against the current FBR withholding tax rate card and Finance Act material before filing.

NEPRA

Electricity tariffs can differ by DISCO, consumer category, time period and adjustment. For that reason the electricity tool asks you to enter the effective rate and adjustments rather than pretending one hard-coded slab table is universally current.

PLRA

Property charges depend on location, transaction details, valuation and taxpayer status. The property tool therefore uses rates and charges entered by the user and points to the official e-Stamp process for the final challan.

Exchange rates

The currency tool may fetch a server-side reference rate from an exchange-rate API. It is a reference conversion, not a bank quote.

Last review

Theme formulas and compliance copy were reviewed in September 2026.