To support the costs associated with editorial processes, online storage, indexing, DOI registration, and long-term archiving, SIGMA: Jurnal Pendidikan Matematika applies an Article Processing and Publication Charge (APC) of IDR 450,000 for each article. As a form of commitment to participate in the review process, authors are required to settle the APC before the review process begins.

The APC covers the following publication services:
1. Editorial handling and coordination of the peer-review process
2. Typesetting and formatting of the manuscript according to journal standards
3. Assignment of a Digital Object Identifier (DOI)
4. Long-term archiving and open-access publication via the official OJS platform
5. Promotion and indexing of the article through various academic databases and citation platforms