ROI & Refactoring Calculator
Technical Debt & Legacy Cost Calculator
Estimate engineering capacity tied up in maintenance and compare modernisation using your own assumptions.
Model starting value: EUR 15,000 base + EUR 9,500 per engineer. Replace with your own estimate; this is not a quote.
Annual capacity value tied up
€147,000
Lost time valued at the entered employer cost. This is neither additional expenditure nor a guaranteed saving.
Annual engineering time tied up
3,360 hours / year
Assumed recovered capacity
1.31 full-time equivalents
Modelled payback period
6.8 months
No obligation & discrete · Direct communication with Simon-Daniel März · No agency middlemen
Assumptions and formula
The model uses 160 working hours per engineer per month. Employer cost, lost time, recovery and investment are estimates. The default 75% recovery is a model assumption, not a promised improvement.
Monthly capacity value = team × monthly cost × lost time × recovery. Payback = €62,500 ÷ €9,188 per month.
Recovered time is available capacity. It becomes actual cash savings only when expenditure is removed. Payback values capacity at employer cost and excludes additional recurring costs or a ramp-up period.
FAQ
Frequently Asked Questions: Tech Debt & ROI
Insights into root causes, the Strangler Fig pattern, and budgeting.
Technical debt accumulates through rapid shortcuts, legacy language runtimes, missing automated test coverage, and monolithic coupling. Over time, bugs multiply, releases grind to a halt, and engineers spend most of their time maintaining fragile workarounds.