# Call for papers deadlines: when most conferences collect talk proposals

Author: Marin Niehues, Stage Starter · Published: 2025-12-16
Topic: Call for Papers & Submissions (https://www.stage-starter.de/en/blog/topic/call-for-papers/)
Source: https://www.stage-starter.de/en/blog/call-for-papers-deadlines-calendar/

Most call for papers deadlines fall in two waves, from February to April for spring and from July to September for autumn, with a median of 50 days before the conference starts. A call for papers is the public announcement with which a conference collects talk proposals, and its deadline sets the date by which a proposal must have arrived. Our basis is an analysis of 2,415 conferences that openly advertise speaking slots for 2026, covering their monthly distribution and the gap between submission deadline and conference start. This article shows how deadlines are spread across the year, how long a call stays open and what a missed or extended deadline means for your planning.

**The median gap between submission deadline and conference start is 50 days, so the calls for the busy autumn conference months mostly close in summer. If you want to be on stage in October, you need your talk and abstracts ready by August at the latest.**

## When do most call for papers deadlines close?

Most deadlines close between February and April and between July and September, because the conferences themselves cluster in spring and autumn. Our analysis assigns the 2,415 conferences to the month in which they take place, and the picture is clear:

- January 108, February 156, March 153 (first quarter: 417 conferences)
- April 233, May 248, June 236 (second quarter: 717)
- July 92, August 108, September 257 (third quarter: 457)
- October 346, November 307, December 171 (fourth quarter: 824)

October is the strongest month with 346 conferences, July the weakest with 92. If you count back the median of 50 days from each conference month, you get the deadline calendar: calls for conferences in September, October and November mostly close between July and September, and calls for April to June between February and April. The summer break is therefore the busiest time of the year for submissions, because that is when the deadlines for the strongest conference quarter expire. When the season runs in Germany and how the conference year is spread in detail is shown in [When is conference season in Germany?](/en/blog/conference-season-in-germany/).

**Deadlines and the conference year in figures**
- 50 days | median gap between submission deadline and conference start
- 346 conferences | take place in October, the strongest month of the year
- 824 of 2,415 | conferences fall in the fourth quarter, around 34 per cent

## How long before the conference does a call for papers close?

A call for papers closes a median of 50 days before the conference starts, and 65 days on average. The average is higher because some conferences close their call very early, in the extreme case 1,538 days before the event, and such outliers pull the mean upwards. The median therefore describes the typical case more accurately: for half of all conferences, fewer than 50 days lie between deadline and stage. At the other end are conferences that accept proposals right up to the opening day.

Those seven weeks belong to the programme committee, the group that decides on submissions at a conference. It reads the proposals, ranks them and sends out acceptances, and the accepted speakers build their talk in the time that remains. Many conferences reply only a few weeks after the deadline, so often only a month is left between acceptance and appearance. How the lead time affects planning around a full diary is worked through in [How far ahead do you submit?](/en/blog/call-for-papers-lead-time/).

## How long is a call for papers open?

A call for papers is usually open for a few weeks, and for two to three months at large conferences. The organiser opens the submission window once date, venue and the thematic tracks of the programme are fixed, and closes it so that the committee has enough time to select. Combined with the lead time of 50 days, this means the call for an autumn conference often appears in spring or early summer, and if you only hear about a conference when its programme is published, you have almost always missed its call.

The submission window has to be tracked for each conference separately, because there is no common deadline. Across 2,415 conferences, calls open and close throughout the year, and a conference list that was accurate in spring is out of date by autumn.

## Are call for papers deadlines extended?

Yes, many organisers extend their call by a few days or a few weeks when too few suitable proposals have come in for individual tracks. The extension is announced on the conference website, on the submission platform or by email to previous submitters. It is a decision the organiser takes case by case and rarely announces in advance, so a reliable submission operation plans with the original deadline.

There is a second reason to submit early: most proposals arrive shortly before the deadline, and some committees review on a rolling basis and award the first slots before the call closes. A proposal that arrives in the first half of the window meets a committee with more time per submission.

## What to do after a missed deadline

After a missed deadline, three routes remain. For annual conferences the next call usually opens a few months after the current edition, and a year later the same slot is available again. Conferences that fill part of their programme by invitation still accept proposals by email after the call has closed if a topic fills a gap in the programme. The third route is the bought slot: pay to speak, the purchase of a speaking slot from the organiser, quickly costs €10,000 or more for a single speaking slot, usually as part of a sponsorship package. Sponsored sessions are often not labelled in the programme, but the audience of a specialist conference notices sales intent in a talk quickly.

## What the deadlines mean for your year

A deadline calendar that runs all year requires a submission operation that runs just as long. In our submissions for clients we reach up to 19 per cent acceptances per conference, while 5 per cent at most is typical in the market at this volume of submissions. The chance of at least one acceptance across n conferences with rate p is 1 − (1 − p)^n: with ten conferences and 5 per cent that is around 40 per cent, with 19 per cent around 88 per cent. In our experience, an operation that delivers acceptances reliably involves at least a hundred submissions to around twenty conferences in the first month and at least fifty a month after that.

Each of these conferences has its own deadline and its own form, and the waves from February to April and from July to September fall in months when consultants and business owners are busy with projects and holidays. Research becomes the real bottleneck: whether a call fits depends on the topic, language and audience of the individual conference, and nobody checks that on the side for several dozen calls a month. How the operation runs from the first call to acceptance is described in the [call for papers guide](/en/blog/call-for-papers-guide/).

## Who keeps track of deadlines for you

Stage Starter takes on this work for you: [we find the right calls, write the submission and submit](/en/) in your name. After that we follow up and accompany you to the stage. From you we need your expertise and one approval of talk and abstracts, given once before the start. The collaboration starts from €990 net per month for the whole operation, and if you would like a written roadmap first, you begin with the Speaker Audit from €2,000 net, which is credited when you hire the agency. No agency can guarantee acceptance, which is decided by the programme committee. How a submission by an agency works in detail is shown in [Call for papers submission by an agency](/en/blog/call-for-papers-submission-agency/).

**Meeting deadlines yourself, buying a slot or using an agency**
Criterion | Submit yourself | Pay to speak | Stage Starter
Calls and deadlines | you keep the conference list and calendar yourself | you book a slot with the organiser | we keep the conference list and deadlines up to date
Submission | you fill in every form yourself | the organiser sells the slot | we submit in your name, after your one-off approval
What it costs | days of your working time, mostly in summer | quickly €10,000 or more for a single speaking slot | from €990 net per month for the whole operation
Pays off most when | your diary has room for research | you want to buy a single appearance | your time is short, the order value is high and a specialist audience is the goal

**Call for papers deadlines close a median of 50 days before the conference starts and cluster from February to April and from July to September. If you want the stages of the strong autumn months, you submit in summer, and that requires an operation that tracks deadlines throughout the year.**

**Sources**
- Stage Starter analysis: 2,415 conferences that openly advertise speaking slots for 2026, with monthly distribution and the lead time between submission deadline and conference start.
- Stage Starter analysis: 2,189 of our own submissions for clients, with acceptance rates per abstract and per conference.

## Frequently asked questions

### When are the deadlines for a call for papers?

Most deadlines close between February and April and between July and September. Each conference sets its own date, which falls a median of 50 days before the conference starts. Because October and November are the strongest conference months, a particularly large number of deadlines fall in late summer.

### How long before the conference does a call for papers close?

A call for papers closes a median of 50 days before the conference, and 65 days on average. The range runs from conferences that accept proposals until opening day to outliers with several years of lead time. For planning, the median is the more reliable figure.

### How long is a call for papers open?

A call for papers is usually open for a few weeks, and for two to three months at large conferences. The call for an autumn conference therefore often appears in spring or early summer. If you only come across a conference through its published programme, you are too late for that edition.

### Are call for papers deadlines extended?

Yes, many organisers extend their call by a few days or a few weeks when too few proposals have come in for certain topics. The extension is announced at short notice on the conference website or by email. You should plan with the original deadline, because each extension is decided case by case.

### By when do I have to submit for conferences in autumn?

For conferences in September, October and November you mostly have to submit between July and September. This follows from the median of 50 days between deadline and conference start. Your talk and abstracts should therefore be ready before the summer break.

### What should I do if I have missed a call for papers deadline?

After a missed deadline you can plan for the next edition of the conference or write to the organiser directly if part of the programme is filled by invitation. A bought speaking slot quickly costs €10,000 or more for a single speaking slot. A continuous submission operation keeps individual missed deadlines from mattering.

### Can an agency keep track of deadlines for me?

Yes, at Stage Starter this is part of the service: we keep the conference list up to date, meet the deadlines and submit in your name once you have approved your talk and abstracts once. No agency can guarantee acceptance, which is decided by the programme committee. The collaboration starts from €990 net per month.

## The next step

Whether the deadlines of the coming months fit your topic and at which conferences your clients sit is something we clarify in an [initial consultation](/en/erstgespraech/).