CPI assesses changes in the cost of living by measuring changes consumer pay for a set of items. CPI serves as the headline figure for inflation. Simply put, inflation reflects a decline in the purchasing power of the dollar, where each dollar buys fewer goods and services. In terms of measuring inflation, CPI is the most obvious way to quantify changes in purchasing power. The report tracks changes in the price of a basket of goods and services that a typical American household might purchase. An increase in the Consumer Price Index indicates that it takes more dollars to purchase the same set basket of basic consumer items.

Inflation is generally bad news for the economy, causing instability, uncertainty and hardship. To address inflation, the Fed may raise interest rates. However, the Fed relies on the PCE Deflator as its primary gauge of inflation because the CPI does not account for the ability of consumer to substitute out of CPI's set. Price changes tend to cause consumers to switch from buying one good to a less expensive-other, a tendency that the fixed-basket CPI figure does not yet account for. Given that the PCE Deflator is a more comprehensive calculation, based on changes in consumption; it is the figure the Fed prefers.

The figure is released monthly, as either a month over month annualized percentage change, or percentage change for the full year. The figure is seasonally adjusted to account seasonal consumption patterns.

On A Technical Note: The CPI includes over 200 categories of goods and services included, divided into 8 main groups, each with a different weight: Housing, Transportation, Food, Medical Care, Education and Communication, Recreation, Apparel, and Other Goods and Services.

CPI Excluding Food and Energy - United States

The CPI is also reported excluding food and energy; two of its most volatile components. These components are particularly sensitive to temporary economic factors like oil prices, natural disasters and seasonal affects. Consequently, CPI excluding Food and Energy provides a more stable figure, but at the cost of overlooking two significant sectors in the economy (together food and energy comprise nearly a quarter of the goods included in the CPI).

The figure is the monthly percent change in the index.

The number of new building projects authorized for construction. The figure is widely used as an indicator for developments in the housing market, since receiving a permit to build is the first step in the construction process. Thus growth in Building Permits reflects growth in the construction sector. Also, due to the high outlays needed for construction projects, an increase in Building Permits suggests corporate and consumer optimism. Additionally, because leading indicators for the housing market respond quickly to changes in the business cycle, the Building Permit figure can act as a leading indicator for the economy as a whole.

The headline is the seasonally adjusted percentage change in Building Permits from the previous month.

Records sales of newly constructed residences in the United States. The figure is a timely gauge of housing market conditions counting home sales when initial housing contracts are signed. Because New Home Sales usually trigger a sequence of consumption, they have significant market impact upon release. In addition to the high expenditure of the new home, buyers are likely to spend more money on furnishing customizing and financing their home. Consequently, growth in the housing market spurs more consumption, generating demand for goods, services and the employees who provide them.

Generally, the housing market is tracked by a number of reports that mark different stages of the construction and home sale process. The first stage is Building Permits, which precede Housing Starts, which lead to Construction Spending, MBA Mortgage Applications and, finally, New Home Sales and Existing Home Sales. As the headline housing figure, New Home Sales are believed to control some of the volatility of other data. For instance, Building Permits and Housing Starts are considered more indicative of business confidence and production rather than consumer spending. And while Existing Home Sales figures are more indicative of consumer expenditures, they are lagging indicators with less predictive value. New Home Sales numbers are considered confirmatory of housing trends and still predictive of consumer spending.

New Home Sales is also a good indicator of economic turning points due to its sensitivity to consumer income. Buying a house is always a major expenditure, typically only undertaken when consumers have sufficient savings or are optimistic about future earnings. Historically, when economic conditions slow, New Home Sales are one of the first indicators to reflect the change. By the same token, New Home Sales undergo substantial growth when the economy has emerged from recession and wages have begun to pick up.

The report headline is the total amount of properties sold.

This is a report which measures the difference in value between the federal government's income and spending during the previous month.

The number of new building projects authorized for construction New Zealand . Building Consents, or Building Permits, are issued when a building project has been authorized to begin construction. Since Building Consents serve as one of the earliest signals of expanded housing supply, the report is a leading indicator for the overall housing market. Also, because of the high outlays needed for construction projects Building Permits suggests optimism for corporate or consumer spending. Lastly, housing indicators are popular leading indicators due to the multiplier effect that they have on the rest of the economy. The headline is the percentage change in new consents for the month.

Note: When looking deeper into the report it is important to analyze in detail what the type of projects the consents are for, as Building Consents include residential housing as well as 'big-ticket' non-residential buildings and government projects that can create large gyrations in the report month to month.

Measure of the money supply used by the Bank of Japan. The figure includes all currency in circulation plus all bank deposits. This indicator tends to be tracked closely with the total money supply. The figure focuses mostly on individual deposit accounts rather than institutional accounts, making it a more attractive money indicator than broad liquidity measures. The headline figure is the percentage change from the previous year.

The Australia and New Zealand Banking Group Limited (ANZ)Commodity Prices Indicator, also called the Commoditiy Price Index, measures the change in the price of exported commodities. Since Australia and New Zealand depend heavily upon commodity exports, this figure acts as a primary gauge of the two nations' GDP and economic strength.

This is a report which measures the change in the total value of new orders placed with machine tool manufacturers.

Measures changes in the selling prices producers charge for goods and services, and well as tracks how prices feed through the production process. Because producers tend to pass on higher costs to consumers as higher retail prices, the PPI is valuable as an early indicator of inflation. Simply put, inflation reflects a decline in the purchasing power of the Dollar, where each dollar buys fewer goods and services. The report also gives insight into how higher prices from raw materials flow toward the final product.

A rise in PPI signals an increase in inflationary pressures. Given the economic instability associated with rising price levels, the Fed often will raise interest rates to check inflation. A low or falling PPI is indicative of declining prices, and may suggest an economic slowdown.

The headline figure is expressed in percentage change of producer price.

Notes: The PPI records prices at various stages of production: raw goods, intermediate goods and finished goods. Though intermediate and crude goods price do provide insight for future inflationary pressure, it is the price of finished goods that generates most interest for market participants. The finished goods data is able to gauge price pressure before the goods reach the retail market.