Mathematical & Financial Disclaimer

Last updated: April 20, 2026

1. Nature of the Tool

ErosionCalc is a mathematical modeling tool that applies standard compound interest formulas to estimate the impact of inflation on income over time. It is a calculator — not a financial advisor, not an investment platform, and not a forecasting system.

2. Mathematical Model

The core computation uses the following standard formulas:

  • Real Value: RealValue = NominalValue ÷ (1 + r)^t
  • Required Rate: RequiredRate = CurrentRate × (1 + r)^t
  • Purchasing Power Loss: Loss = 1 − (1 ÷ (1 + r)^t)

Where r = annual inflation rate (decimal) and t = number of years.

These formulas are mathematically precise under the assumption of a constant annual inflation rate. Real-world inflation is variable, sector-dependent, and geographically heterogeneous.

3. Data Sources & Accuracy

Default inflation rates are approximate values based on recent publicly reported Consumer Price Index (CPI) data from national statistical agencies and international organizations. These figures:

  • May not reflect the most current available data
  • Are national averages that may differ significantly from sector-specific or regional inflation
  • Are subject to revision by issuing agencies
  • Do not account for future monetary policy changes

4. Not Financial Advice

Nothing on this website constitutes financial, tax, legal, or professional advice. The calculator outputs are projections based on simplified assumptions and should be used as one input among many in your financial decision-making process. Always consult qualified professionals for decisions with material financial consequences.

5. No Warranty

The Service is provided "as is" and "as available" without warranties of any kind, whether express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, or accuracy of calculations.

6. User Responsibility

By using this tool, you acknowledge that you understand the limitations of mathematical modeling and accept full responsibility for any decisions made using the calculator's output.