Quarter

A quarter is a three-month period used throughout finance and business to measure, report and compare performance over time. A standard calendar year is divided into four quarters, commonly labelled Q1 through Q4, and companies, governments and investors widely use the quarter as the standard unit for reporting earnings, economic data and other periodic results.

Not every organisation's quarters align with the calendar year; many companies and governments instead use a fiscal year that begins on a date other than 1 January, meaning their Q1 might correspond to a different set of calendar months than another organisation's Q1.

A quarter is simply a quarter of a year, the same way a quarter of an hour is fifteen minutes, giving businesses and investors a consistent, manageable chunk of time to measure progress without having to wait a full year for results, or without the noise of looking at results month by month. It is the rhythm most public companies report their financial results to, which is why "quarterly earnings" are such a closely watched event in financial markets.

Because so much financial reporting is built around quarters, comparing a company's performance in one quarter to the same quarter a year earlier, rather than to the immediately preceding quarter, is a common way analysts try to filter out seasonal effects that might otherwise distort the comparison.

• Publicly listed companies typically report earnings and financial results every quarter.
• Government statistical agencies release key economic indicators, such as gross domestic product, on a quarterly basis.
• Dividends on many shares, and interest on some financial products, are paid quarterly rather than monthly or annually.

Because fiscal years do not always start on 1 January, a company's reported "first quarter" can cover entirely different calendar months than another company's first quarter, which is why investors comparing results across companies generally need to check which specific months each company's quarters actually cover.

Beyond company earnings, government statistical agencies rely heavily on quarterly reporting for headline economic indicators, most notably gross domestic product, which is almost universally reported on a quarterly basis alongside annual figures. These quarterly releases are closely watched by financial markets, policymakers and central banks, since successive quarters of economic contraction are, in many countries, part of the common working definition of a recession.

Because quarterly economic data can be revised as more complete information becomes available, analysts generally treat an initial quarterly release as a preliminary estimate, watching for subsequent revisions that can sometimes materially change the picture painted by the first reported figure.

Companies often choose a fiscal year end that aligns with the natural rhythm of their specific business, such as a retailer ending its fiscal year shortly after the holiday shopping season rather than at the calendar year end, so that its quarters better reflect genuine seasonal business cycles rather than splitting a key sales period awkwardly across two separate quarters. This choice affects how that company's quarterly results should be interpreted, since comparing its results to another company with a different fiscal year requires care to ensure like periods are genuinely being compared.

Investors analysing multiple companies within the same industry are generally advised to check each company's specific fiscal year definition before drawing conclusions from quarter-to-quarter comparisons across those companies.

Analysts sometimes refer to a trailing twelve months figure, which sums the most recent four quarters regardless of calendar or fiscal year boundaries, as a way to assess a company's most current overall performance without waiting for a full new annual reporting cycle to complete.

Stock markets in many countries observe a noticeable pattern of increased trading activity and volatility around the weeks when companies release their quarterly results, often referred to informally as earnings season.

Government agencies sometimes face political scrutiny over the timing of releasing quarterly economic data, given how closely markets and the public watch these figures as a gauge of overall policy performance.