Glossary · Economy & Macro

Consumer Price Index

A statistical measure tracking changes in the cost of a defined basket of goods and services over time, used to gauge inflation. The SBP and FBR both reference CPI in monetary and fiscal policy decisions.

Written by BSL Research Desk · Reviewed by BSL Research (SECP-licensed securities brokerage) · Updated 13 Jul 2026 · Also known as CPI

01What is Consumer Price Index?

The definition — and what it means in practice.

The Consumer Price Index (CPI) is a statistical measure that tracks how the cost of a defined “basket” of goods and services changes over time. Because the basket is fixed and measured repeatedly, CPI provides a consistent way to estimate inflation (the general rise in prices) and changes in purchasing power. CPI is often reported as an index level and as a percentage change over a period.

CPI matters because inflation affects both company earnings and your real (after-inflation) investment returns. Rising CPI can increase input costs (such as materials, wages and transport) and can also influence how much consumers can afford to spend. CPI is also closely watched because it can shape interest-rate expectations, which in turn affects borrowing costs, valuations and the relative appeal of shares versus fixed-income instruments.

In plain English

If CPI rises 10%, something that cost Rs 100 in the basket is treated as costing about Rs 110, meaning your money buys less.

  • CPI tracks price changes in a defined basket of goods and services, making it a widely used inflation gauge.
  • It is typically discussed as an index and as a percentage change over a period.
  • Higher CPI implies lower purchasing power and can squeeze household budgets and business margins.
  • CPI can influence interest-rate expectations, which affects valuations and financing costs.

02How consumer price index works on the PSX

The Pakistan-specific rules, conventions, and numbers.

In Pakistan, CPI is a key inflation reference and is explicitly used by the State Bank of Pakistan (SBP) and the Federal Board of Revenue (FBR) when making monetary and fiscal policy decisions. Because policy decisions influence financing conditions and economic activity, CPI releases are closely watched by market participants when forming expectations about the direction of interest rates and broader macro conditions.

For a Pakistan Stock Exchange (PSX) investor, CPI typically shows up in daily market commentary and in how analysts frame results: whether companies are passing higher costs to customers, protecting margins, or seeing demand slow as purchasing power weakens. CPI is also a common yardstick for thinking about “real returns” on a portfolio, alongside nominal gains and cashflows such as dividends.

03Common misconceptions

Where investors most often get this wrong.

Myth

CPI is the same thing as the cost of living for every household.

Reality

CPI reflects an average basket and methodology; different households can experience higher or lower inflation depending on their spending patterns.

Myth

If CPI goes up, stock prices must go down immediately.

Reality

Markets can react in different ways. Some firms can raise prices with inflation, while others face margin pressure; expectations about interest rates also matter.

Myth

CPI measures only food prices.

Reality

CPI covers a broader basket of goods and services. Food may be important, but it is not the only component.

04Using consumer price index on BSL

Where this term shows up across the platform — with live data.

  • Track market moves around macro headlines on the Market page
  • Compare index performance as a backdrop for inflation expectations via the KSE-100 Index page
  • Scan sectors that may react differently to cost pressure using Sectors
  • Read related concepts in the Glossary

05Frequently asked questions

What investors ask about consumer price index on the PSX.

Frequently Asked Questions

CPI stands for Consumer Price Index. It measures how the cost of a defined basket of goods and services changes over time, and is commonly used as an indicator of inflation and purchasing power.

06Related terms

Keep building the picture.

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