My grant funding is expiring/ending soon - can I pay the APF/APC before the article is accepted?

Yes, you can prepay the costs. Two options:

• purchase prepaid credits
• purchase an institutional membership with APF waivers

You can also fast-track the paper to have an initial decision within 4 weeks (20 business days), however, fast-tracking will not give you a definitive date for final acceptance (because it also depends on the extent of revisions and number of review rounds required).

Related:

• How to fast-track (expedite) a paper and what are the benefits?