bonification

noun3

1. •
   The paying of a bonus (especially in relation to taxes).

   • We beg leave to state that on high colors cut by ten yards, (instead of twelve yards for ordinary colors,) there is a bonification of eight per cent. — 1867
2. •
   A bonus that improves the score of a competitor who achieves a milestone.

   • Somewhat confusingly, the bonification – or bonus – is subtracted from the rider's time, not added to it. — 2015
3. •
   An act or process of improvement.