The remaining funds will be shared equally among all participating teams in the form of:
Combined with the minimum $10m qualification payment, this guarantees each team at least $12.5m for taking part in the tournament.
Preparation funding is intended to help cover expenses such as pre-tournament training camps and squad travel.
Fifa defines “additional team contributions” as subsidies for delegation costs and increased team ticket allocations, aimed at reducing financial disparities between nations by offsetting World Cup-related expenses like travel, logistics and administration.
This piece is the latest from BBC Sport’s Ask Me Anything team.