Rating given to your project related to the value of your Technical Debt Ratio.
The Maintainability Rating grid is:
The Maintainability Rating scale can be alternately stated by saying that if the outstanding remediation cost is:
- <=5% of the time that has already gone into the application, the rating is A
- between 6 to 10% the rating is a B
- between 11 to 20% the rating is a C
- between 21 to 50% the rating is a D
- anything over 50% is an E