Publishing

“I submitted and now they want a huge fee. Is this journal predatory?”

The red flags, and your options right now.

The acceptance came suspiciously fast. Then the invoice arrived, larger than expected, and the red flags you half-noticed at submission are suddenly everywhere. Here is how to tell whether a journal is predatory — and what you can actually do once you have already sent your paper.

By Heidi Andersén, MD, PhD · Updated 18 July 2026 · 7 min read

“After I submitted my paper I started seeing some alarming red flags all over the place. They are now asking me to pay a huge sum of money which I cannot and do not want to pay.” — a researcher, after submission

The problemThe fee is a symptom, not the disease.

A legitimate open-access journal can charge a substantial article-processing charge (APC) — the fee alone does not make a journal predatory. What marks a predatory journal is the pattern around the fee: no real peer review, aggressive solicitation, fake or hidden metrics, an editorial board that never agreed to serve, and a charge that appears only after you are committed. If the acceptance was fast and light and the invoice is the first serious contact, you have reason to look hard.

Why it mattersA predatory publication can follow you.

Beyond the money, a paper in a predatory venue is hard to undo: it may not be indexed, may not count for assessment, and can raise questions on your record later. The best moment to check a journal is before submission — but if that moment has passed, acting quickly still protects both your money and your manuscript.

Common mistakesFour things that deepen the trap

Paying to make it stop. Paying rarely ends the pressure and confirms you as a source of income. Do not pay under duress.
Assuming acceptance means you are locked in. Until a copyright form is signed, you usually still control where the paper goes.
Trusting the journal’s own metrics. “Impact factor” look-alikes and invented indices are a hallmark, not reassurance.
Being too embarrassed to ask. Your library and supervisor have seen this many times. Silence helps only the journal.

The minimal explanationThe red-flag pattern

You do not need a definitive verdict — you need to weigh the signals. Strong red flags: unsolicited flattering emails, acceptance within days with no substantive review, an editorial board that cannot be confirmed or lists people without consent, fake metrics, a fee revealed only after acceptance, spelling and scope that are all over the place, and no membership of recognised bodies. Cross-check the journal against independent registries rather than its own claims: is it in the DOAJ? Is the publisher a COPE member? Does Think. Check. Submit. raise concerns? Several flags together, not any single one, is the signal.

Worked exampleAlready submitted — what now

A route out, in order

Do not pay yet. Assess first; a charge under pressure is a warning, not an obligation.
Check independent registries. DOAJ for the journal, COPE for the publisher, Think. Check. Submit. for the overall picture.
Look for a signed transfer. If you have not signed a copyright or licence agreement, you very likely still hold the rights.
Withdraw in writing. Send a dated, polite withdrawal request keeping a copy; state you are withdrawing the manuscript and do not consent to publication or fees.
Tell your library and co-authors. They can confirm the assessment and help with next steps — and no reputable journal will penalise a clean withdrawal.

Checklist & free checkRun the red-flag check yourself

Downloadable · predatory red-flag checklist

The red-flag check

Did they contact you first, with unusual flattery?
Was acceptance suspiciously fast, with little or no real review?
Was the fee disclosed only after acceptance?
Can you independently confirm the editorial board members agreed to serve?
Does the journal cite metrics you cannot confirm from an independent source?
Is the journal in the DOAJ and the publisher a COPE member?
Does Think. Check. Submit. raise any concern?

Predatory-journal red-flag check [ ] Unsolicited, flattering invitation [ ] Very fast acceptance, no substantive review [ ] Fee revealed only after acceptance [ ] Editorial board cannot be independently confirmed [ ] Metrics not confirmable from an independent source [ ] NOT listed in DOAJ / publisher not COPE member [ ] Think. Check. Submit. raises concerns If several are ticked, treat with caution: - Do NOT pay under pressure - Check for a signed copyright/licence transfer - Withdraw in writing (keep a dated copy) - Tell your library and co-authors No-fee routes: DOAJ APC filter, institutional agreements, journal waiver policies, a preprint. A signal to weigh, not a verdict on the journal.

Download the checklist (Markdown)

The honest limit. This checklist helps you weigh signals; it does not certify a journal as legitimate or fraudulent. Treat several flags together as a reason to pause and check independent registries — the verdict is yours, made with your library and co-authors.

No-fee routesOpen access without the trap

If cost was the reason you ended up here, there are honest routes to open access: filter the DOAJ for journals with no APC, check whether your institution has a read-and-publish agreement that covers the fee, ask the journal directly about a waiver (many have formal policies for authors from lower-income settings or without funding), or post a preprint so the work is open while you choose a venue carefully.

Related guidesRead next

Vahtian does not sell a journal checker, and there is no product to buy here — this page is a free trust resource. If it helped, the Learn journey covers the rest of getting published without getting scammed.