General

Inflation

Convert between nominal and real values, and test whether rent keeps pace.

Beginner

Introduction

Who this is for: Investors assessing whether returns hold up in purchasing-power terms.

Why it matters: A fixed rent loses real value every year. Over a ten-year lease at 3% inflation, a rent that never rises is worth about 26% less at the end than at the start.

Typical scenario: A landlord on a 10-year lease with 5-yearly reviews checking real income erosion.

Common mistakes:
  • Comparing a nominal return today against a real return elsewhere.
  • Assuming an upward-only rent review protects against inflation — it only protects against falls.
  • Forgetting that fixed-rate debt benefits from inflation while fixed income suffers.

Inputs

Values

£

years

%
%

Analysis

£75,000 growing at 0% for 10 years reaches £75,000 nominally, but only £55,807 in today's money at 3% inflation — a real change of -25.6%.

This analysis provides context, not financial advice. Consult a qualified adviser before making investment decisions.

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Sensitivity Analysis

Sensitivity

Adjust the variables below to stress-test this scenario. Results update instantly.

£75,000
£0£150,000
3%
025
0%
-1025

Export

Live Results

Nominal Value in Future

£75,000

Real Value (today’s money)

£55,807

Purchasing Power Lost

£19,193

Real Growth Rate

-2.91%

Real growth is -2.91% — this amount loses 25.6% of its purchasing power over 10 years despite holding in cash terms.
To maintain today's purchasing power, this would need to reach £100,794 in 10 years.
Needed to Maintain Value£100,794
Real Value Change-25.59%