The four Grand Slams and tennis' three governing bodies are finalising a multi-million dollar package of financial assistance for lower-ranked players.
Details of the package, which is likely to be worth at least $6m, are expected to be announced later this week.
A player's ranking will be used as a starting point, but previous earnings and other income may be taken into consideration when players apply for support.
Discussions, which have proved complex, began shortly after professional tennis was suspended because of the coronavirus pandemic on 12 March.
Meanwhile, Novak Djokovic, Roger Federer and Rafael Nadal are hoping top 100 singles and top 20 doubles players will contribute to a separate $1m fund for men ranked outside the top 250.