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Financial Glossary
Inflation is the rate at which the general level of prices for goods and services rises over time, eroding purchasing power. It is typically measured by the Consumer Price Index (CPI), which tracks the cost of a basket of common goods and services. Central banks target moderate inflation (typically 2%) as a sign of a healthy economy.
Inflation represents the decline of purchasing power over time. While moderate inflation (2-3%) is considered healthy for economic growth, high inflation erodes savings, distorts investment decisions, and disproportionately affects people on fixed incomes. Inflation is measured through various indices, with CPI being the most commonly referenced. Core CPI excludes volatile food and energy prices to show underlying inflation trends. The Personal Consumption Expenditures (PCE) index is the Federal Reserve's preferred measure. Understanding inflation is crucial for long-term financial planning because it determines the real (inflation-adjusted) return on your investments and savings.
Inflation directly affects your real income. If you receive a 3% raise but inflation is 5%, your purchasing power has actually decreased by 2%. Over a career, this gap compounds significantly. Salary negotiations should always consider inflation expectations. Additionally, many tax brackets, social security payments, and government benefits are inflation-indexed, meaning they automatically adjust upward with CPI. Understanding whether your income sources are inflation-protected is essential for financial planning.
If the inflation rate is 3% per year, an item that costs $100 today will cost approximately $103 in one year. Over 10 years at 3% inflation, that same item would cost about $134. This means your savings need to grow at least at the inflation rate to maintain purchasing power.
If your salary increases by less than the inflation rate, your real income (purchasing power) is decreasing. When negotiating raises or evaluating job offers, consider whether the increase keeps pace with or exceeds inflation.
Investing in assets that historically outpace inflation (stocks, real estate, TIPS) can protect your purchasing power. Keeping large amounts in low-interest savings accounts means your money loses value over time. Use our investment calculator to model growth against inflation.
Inflation can be caused by demand-pull factors (too much money chasing too few goods), cost-push factors (rising production costs passed to consumers), or monetary factors (increases in money supply). Supply chain disruptions, energy price shocks, and fiscal policy can all contribute to inflationary pressure.
Central banks control inflation primarily through interest rate policy. Raising interest rates makes borrowing more expensive, reducing spending and cooling the economy. Quantitative tightening (reducing money supply) is another tool. The Federal Reserve targets 2% annual inflation as measured by the PCE index.
Nominal return is the raw percentage return on an investment. Real return = Nominal return - Inflation rate. If your investment returns 7% and inflation is 3%, your real return is approximately 4%. Always consider real returns when evaluating long-term investment performance.
Singapore calculators use data from the following official government agencies:
Our Singapore calculators follow income tax rates, CPF contribution rates, and GST rates published by IRAS and the Ministry of Finance. Economic data is sourced from SingStat and the Department of Statistics. All figures are for educational purposes and should be verified with a qualified professional.
All tax brackets, contribution rates, and economic data used in our calculators are sourced from the official government publications listed above. Rates are updated at least annually to reflect the latest tax year and regulatory changes. Users should verify critical figures with official sources or qualified professionals.
Last updated: June 2026. Information may change; always verify with official sources.
Last Updated: July 2026 — Reviewed Against Official Sources
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