Enter the full (dirty) price ($) and the accrued interest ($) into the Calculator. The calculator will evaluate the Flat Value. 

Flat Value Formula

FV = DP - AI


  • FV is the Flat Value ($)
  • FP is the full (dirty) price ($)
  • AI is the accrued interest ($)

To calculate the Flat Value, subtract the accrued interest from the dirty (full) price.

How to Calculate Flat Value?

The following steps outline how to calculate the Flat Value.

  1. First, determine the full (dirty) price ($). 
  2. Next, determine the accrued interest ($). 
  3. Next, gather the formula from above = FV = DP – AI.
  4. Finally, calculate the Flat Value.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

full (dirty) price ($) = 300

accrued interest ($) = 20