Open Access APC Grant Budget Planner

Plan article processing charges for multiple papers within a research grant period.

Grant & Budget Settings
Amount you have set aside for OA publishing fees
Planned Publications
Budget Summary

Add at least one paper above to see your budget summary.

Estimate for planning purposes only. APC list prices change frequently; always confirm current fees directly with the journal before submitting. Waiver eligibility depends on your institution, funder, and the journal's current policies. This tool does not constitute financial or legal advice.

How to Use This Calculator

This planner helps researchers budget article processing charges (APCs) for multiple planned publications within a single grant period — the workflow that grant offices and library research support teams describe but no clean interactive tool has served.

  1. Set your grant APC budget — the total amount you have allocated (or plan to request) for open access publishing fees.
  2. Select your funder mandate — NIH, UKRI, Plan S, ERC, or Wellcome mandates affect which journal types are compliant. The calculator flags potential issues.
  3. Add each planned paper — enter a working title, the journal's listed APC, any waiver or institutional discount %, what share your grant covers (vs. co-authors' institutions), and the journal type (Gold OA vs. Hybrid OA).
  4. Read the summary — total projected spend, remaining budget, and per-paper costs are calculated instantly.

Understanding the APC Fields

Calculation Method

For each paper: Net cost to your grant = List APC × (1 − Waiver%) × (1 − Institutional coverage%) × (Grant share%)

Total projected APC spend = sum of net costs across all papers. Budget remaining = Grant APC budget − total spend.

Frequently Asked Questions

Can I include APC costs in my NIH grant budget?
Yes. NIH allows APC costs as allowable direct costs provided the publication arises from the funded research and the journal satisfies NIH's public access policy. Budget conservatively at proposal stage using your target journal's current list price, and revise if your journal selection changes before acceptance. The NIH Public Access Policy requires manuscripts to be deposited in PubMed Central no later than 12 months after publication, but many researchers opt for immediate OA to meet funder intent more fully.
What is a co-author APC split and how is it calculated?
When corresponding authors or their institutions share an APC, each pays a portion. For example, if two labs agree to split a $3,000 APC equally, your share is $1,500 (50%). Use the "Your grant's share %" field to reflect your portion after waivers and institutional coverage are applied. This calculator computes your grant's net exposure only — co-authors' institutions handle the rest independently.
Does a waiver reduce the APC to zero?
A 100% waiver reduces your out-of-pocket APC to zero for that journal. Partial waivers (e.g., 50%) reduce the list price proportionally. Waivers from Read & Publish agreements, country-based eligibility programs (World Bank tiers), or society memberships are entered in the Waiver/Discount % field. Institutional coverage (e.g., a library central APC fund) is applied on top of — i.e., after — any waiver.
What is the difference between Gold OA and Hybrid OA APCs?
Gold OA journals publish all articles open access and fund operations entirely through APCs. Hybrid journals are subscription-based but allow authors to pay an APC to make their individual article open access. Hybrid APCs are typically nearly double those of fully open access journals. Importantly, Plan S and some other funder mandates do not cover hybrid journal APCs unless the journal is covered by a transformative agreement.
Do Plan S funders cover APCs in hybrid journals?
Generally no. cOAlition S (Plan S) does not cover APCs for hybrid journals unless they are part of a recognised transformative agreement. Researchers funded by Plan S-mandating funders (including many ERC, UKRI, and national European agencies) must publish in fully open access journals, or hybrid journals covered by a qualifying transformative deal. Use the Hybrid flag in this tool to identify compliance risks early.
How much should I budget per article in a grant proposal?
Budget conservatively using the current list prices of your target journals. The global average APC has risen to approximately $2,000–$2,800 USD across major publishers, but STEM biomedical journals from large commercial publishers frequently range $3,000–$12,000+. Start with the journal's listed fee, then apply confirmed institutional discounts or waivers to determine your realistic net cost per paper. Always build in a buffer for price changes between proposal submission and publication date.