The calculator will show you this, when using the drop down box for which airline, select finnair (if booking as a BA codeshare then select BA) and it will show you. The airline you choose is the flight number, not the operating airline.

(For example, Air Lingus from BHX-DUB earns 0TP when booked via Air Lingus, but earns 10TP (lowest cost) when booked via BA with a BA flight number on the same flight)