The formula is the sum of the quality score [WQ x Qi] + the price score [WP x (Psetmax - Pi) / (Psetmax - Psetmin))].


WQ x Qi + WP x ((Psetmax - Pi) / (Psetmax - Psetmin))

WQ = Weighting quality

Qi = quality of the registration

WP = Weighting of price

Psetmax = The price that no longer yields price points to be set by the buyer

Psetmin = The price that yields all price points, to be set by the buyer


Quality Q

The quality score is achieved just like with most other formulas; WQ x Qi; that is, multiplying the weight of quality (WQ) by the score of the relevant offer (Qi) is the quality score of the offer .


In practice, WQ x Qi is the sum of several (partial) quality criteria and multiple partial scores of the tender per (partial) quality criterion. So WQ1 x Q1i + WQ2 x Q2i + etc. This addition has already been performed in the formula to simplify the display. The resultant WQ x Qi is therefore the sum of the weights of all (partial) quality criteria and the sum of the scores of the tender i on all those (partial) quality criteria.


Price P

Each offer receives a number of price points which is added to the Q points.

The number of price points per offer i is calculated on the basis of WP x ((Psetmax - Pi) / (Psetmax - Psetmin)). Psetmax and Pset min are values that procurement must record prior to drawing up the tender.


If an offer price (Pi) scores at the very top (expensive side) of the range; then Pi = Psetmax, with which the number of prize points is zero. At the very bottom of the price range Pi = Psetmin applies, then the P score is: WP x (Psetmax - Psetmin) / (Psetmax - Psetmin) = 1 x WP and with that the offer gets all price points (WP). The number of price points is linearly interpolated for all Pi's between Psetmax and Psetmin.