Most accelerator applications are not rejected because the startup is bad. They are rejected because the reviewer could not see, in a few minutes, why it is good. This guide shows you how to fix that.
It covers what programmes actually look for, the application windows coming up, how to answer the questions every form asks, the most common reasons for rejection, how to read the terms, and a readiness checklist you can work through before you apply. Every programme detail was checked against the programme’s own website in October 2026. If you are still choosing where to apply, start with our guide to startup accelerators and incubators in Kenya.
Key takeaways
- Reviewers read dozens of applications in a sitting. Clarity beats ambition: say what you do in one plain sentence.
- The team is usually the most important part of the application. Show something impressive each founder has built.
- Most rejections are about fit or effort, not quality: wrong stage or sector, no evidence of demand, an incomplete profile, or generic AI-written answers.
- Work out the valuation a deal implies before you apply, and check whether there is a programme fee.
- Y Combinator’s next deadline is 2 November 2026. Antler, Baobab and Madica accept applications year-round or by rolling cohorts.
In this guide
Are you ready to apply? A two-minute self-test
Tick everything that is true today. Be honest: reviewers will check.
Accelerator readiness
Your answers stay in your browser.
What accelerators actually look for
Programmes word it differently, but they assess the same four things. Baobab, for example, publishes its five criteria: team, business model, product, market and fit (Baobab FAQ).
Can these founders build and sell this? Market knowledge, execution and grit matter more than CVs.
Is there evidence people want it: users, revenue, a waitlist or customers willing to pay?
Is the market large and growing, and does the company fit the programme’s stage, sector and location?
Y Combinator calls the founder question “the most important question on the application”. Paul Graham’s advice is to describe something impressive each founder has built or achieved, be specific, and not list the startup itself as the achievement (YC: How to apply). He also says he cares more about the quality of the founders than of the initial idea, because ideas change.
Traction is the second filter. You do not always need revenue: YC has no minimum revenue requirement, and Baobab accepts startups with an MVP and early traction or other evidence of demand, such as sign-ups, waitlists or customers willing to pay. What you cannot skip is evidence.
Fit is the silent filter. Many good startups are rejected simply because they do not match the programme: 500 Global Nairobi only takes agriculture, energy, mobility and built-environment startups, and Google’s Africa programme wants deeply technical, preferably AI-driven companies. Check the rules in our programme profiles before you write a word.
Application windows to know
Some programmes run fixed cohorts with deadlines; others accept applications all year. These are the windows as published by each programme. Check the official page for the current call. Programmes marked “check first” were active in 2025 but show no sign of a 2026 programme; see the status section in our Kenya guide.
| Programme | How applications work | Latest published window | Decision time |
|---|---|---|---|
| Y Combinator | Batches with deadlines | Apply by 2 November 2026 for the January–March 2027 batch in San Francisco | Decisions by 11 December; usually the same day as the interview |
| Google for Startups Africa | Annual class | 2026 call ran 4 February to 18 March; programme April to June | Before the April kick-off |
| 500 Global Nairobi (check first) | Cohorts | 2025 call closed 19 September for an October to December programme; no 2026 call found | Before the programme starts |
| Visa Africa Fintech Accelerator | Cohorts | Cohort 6 call closed 17 May 2026 | Before the cohort starts |
| Katapult Africa | Cohorts | 2026 call closed 25 April | After interviews and due diligence |
| Antler East Africa | Rolling, residency about every six months | Open year-round | Varies by cohort |
| Baobab Network (check first) | Cohorts through the year | Says applications are open; latest recorded investment February 2025 | 4 to 12 weeks for feedback |
| Madica | Rolling, not cohort-based | Open year-round | Varies |
Sources: YC, Google, 500 Global, Opportunity Desk, Baobab, Madica.
Anatomy of a strong application
Most forms ask some version of the same questions. Answer each one in plain words, with numbers where you have them. The examples below are illustrative, not from real applications.
Three more things make a difference. Admit the risks: YC’s advice is to disclose flaws rather than hide them, because it shows you have thought hard about the business. Compare yourself to something familiar, such as “Shopify for informal retailers”, if it really helps a reader understand. And record the video if one is asked for: YC says it is statistically much more likely to interview founders who submit one (YC: How to apply).
Why applications get rejected
These are the reasons programmes themselves publish, or that follow directly from their published rules. Most are about fit and evidence, and most can be fixed before the next cohort.
| Reason | Where it comes from | How to fix it |
|---|---|---|
| The reviewer cannot tell what you do | YC advises cutting every unnecessary word and avoiding marketing language | Rewrite your one-liner until a stranger can repeat it |
| Generic, AI-written answers or deck | The most common problem in Revise reviews, alongside incomplete profiles | Write it yourself; use AI only to edit |
| The founders section is generic | YC calls it the most important question | Give one specific, impressive thing each founder has built |
| No evidence of demand | Baobab and Madica ask for an MVP and early traction or paying customers | Get 10 paying or active users, or a waitlist, before you apply |
| Business model does not fit | Baobab excludes agencies doing custom development and wants a clear path to profitability | Show product revenue and unit economics, not project fees |
| Too late for the programme | Madica looks for companies that have not yet raised significant institutional capital | Apply to programmes built for your stage |
| Founders are not full-time | Madica requires full-time founders and prioritises those not raising during the programme | Commit full-time, or wait until you can |
| Wrong sector or not technical enough | 500 Global Nairobi has four sectors; Google wants deeply technical, AI-driven teams with a committed CTO | Apply where your sector is a priority |
| Cannot attend in person | Antler requires relocation to Nairobi; 500 Global needs four weeks in Nairobi | Check location rules before applying |
What we see at Revise
A person on the Revise team reads every application. These are the most common reasons we turn one down:
- An incomplete profile. Missing founder details, no pitch deck, or no link to the product or MVP.
- A one-line, superficial introduction that does not tell us what you do, for whom, or why it matters.
- The opposite: long, generic text that reads as AI-written, full of buzzwords and empty of specifics.
- A pitch deck that is missing, or looks fully AI-generated, with no real numbers, customers or insight.
Our advice: use AI to tidy your writing, not to write it for you. We want your numbers, your customers and your own voice.
If you are rejected
Read the reasons carefully if you get them. Baobab, for example, sends reasons and advises founders to work on them before reapplying (Baobab FAQ). When you reapply, lead with what has changed since last time: new customers, revenue growth, a new co-founder or a sharper focus. Progress between applications is one of the strongest signals you can send. Missing a technical or commercial co-founder? Revise co-founder matching connects founders across Africa.
Reading the terms
Know what you are signing before you apply, so the offer does not surprise you. Most equity programmes use either a straightforward equity purchase or a SAFE (simple agreement for future equity), a contract popularised by YC that converts into shares at your next priced round (YC documents).
- Valuation cap: the maximum valuation at which the SAFE converts. On a post-money SAFE, the ownership you sell equals the investment divided by the cap: $500,000 at a $6.7 million cap is about 7.5%.
- Discount: lets the investor buy shares at a lower price than your next round, for example 20% below.
- MFN (most favoured nation): a SAFE with no cap or discount that automatically takes the best terms of any SAFE you issue later. YC’s $375,000 follow-on uses this.
- Pro rata rights: the right to keep the same ownership in later rounds. On YC’s standard documents this sits in a separate side letter.
- Programme fees: some programmes charge them. 500 Global lists a Phase 1 fee of $35,000 per startup for its Nairobi accelerator, although press coverage describes the programme as tuition-free, so ask whether the fee is covered for your cohort.
What valuation does a deal imply?
Enter the cheque and the equity it buys.
| Deal | Cheque | Equity | Implied post-money valuation |
|---|---|---|---|
| Antler East Africa (initial) | $100k | 10% | $1.0m |
| Baobab Network | $100k | 12.5% | $0.8m |
| Norrsken Impact Accelerator | $125k | 7% | About $1.79m |
| Y Combinator (first $125k) | $125k | 7% | About $1.79m |
Terms from each programme’s published standard deal; see the equity comparison in our Kenya guide.
Compare the implied valuation with what an angel investor would offer you. If a programme values you well below that, the support, network and follow-on capital need to be worth the difference.
Preparing for the interview
If your application stands out, the next step is usually a short call. YC’s interviews are ten-minute video calls with all founders present and two to four YC partners, who have your application open and ask simple, direct questions; decisions usually come the same day (YC: Apply, YC Startup Library). Other programmes follow interviews with due diligence on your numbers, documents and references.
Prepare short, specific answers to the questions that come up in almost every interview:
- What are you building, and who is it for?
- How many users or customers do you have, and how fast is that growing?
- How do you find customers, and what does it cost?
- Who are your competitors, and why will you win?
- How did the founders meet, and who does what?
- What will you do with the money and the programme?
- What is the biggest risk to the business?
Practise with someone who will interrupt you. Operators who have sat on selection panels can help: meet the Revise mentors.
Readiness checklist
Work through this before you submit. You can tick items as you go and print the list. Templates for agreements and data rooms are in the Revise toolkit.
Company
Evidence
Application
Fit
What each programme emphasises
Tailor each application. A few lines on what each programme stresses, with links to the full profiles:
Clarity and the founders. Keep answers short, show something impressive each founder has built, and submit the video. Profile
Individuals and early teams. You can apply before you have a co-founder or idea, but you must relocate to Nairobi for the residency. Profile
Technical depth. Traction, ideally growth stage, a scalable product, AI or machine learning, and a CTO who will attend the sessions. Profile
Sector fit and impact. Seed-stage companies in agriculture, energy, mobility or built environment, able to spend four weeks in Nairobi. Its last cohort ran in 2025; no 2026 call found. Profile
Fintech with a working product. A 12-week programme for startups with an MVP or a market-ready solution. Profile
Team, business model, product, market and fit. An MVP with early traction and a clear path to profitability; African-led teams. Latest recorded investment February 2025, so confirm it is still investing. Profile
Early but real. An MVP, ideally with paying customers, little or no institutional funding, and full-time local founders. Profile
Impact in agri-, food- and climate-tech, at early-growth stage. Check the current call first. Profile
Impact at pre-seed to seed, any sector, with eight weeks in Stockholm. Profile
When to apply, and how many programmes
- Apply before you need the money. Selection, due diligence and the programme itself can take months. Start three to six months before your runway gets tight.
- Shortlist two to four programmes that fit. Spreading thin applications across ten programmes rarely works; a tailored application to a programme that fits does.
- Watch for clashes. Some programmes prefer founders who will not raise during the programme, and you can only realistically take one equity deal at a time.
- Stagger your deadlines. A rejection with feedback from one programme can improve your next application.
A person reads every Revise application
The Revise Accelerator is an AI-native, equity-free programme for founders across Africa. Applying is free and takes about five minutes; you can save it and come back.
- 0% equity, now or later
- Four months with a named operator
- Revise OS for go-to-market and funding work
- Eligibility for up to 100k USD co-investment, subject to our investment committee
Frequently asked questions
Can I apply to several accelerators at the same time?
Usually, yes. Most programmes do not require exclusivity at the application stage. Check each programme’s rules, though: Madica, for example, prioritises founders who will not be raising during the programme, and you can realistically accept only one equity deal at a time.
Do I need revenue to get into an accelerator?
Not always. Y Combinator has no minimum revenue requirement. Baobab and Madica want at least an MVP with early traction or paying customers, and Google’s Africa programme looks for traction, ideally at growth stage. Every programme wants evidence of demand.
Can a solo founder get into an accelerator?
Yes, at many programmes. Baobab has no ban on solo founders, and Antler’s residency is designed for individuals who want to find a co-founder. A strong team still makes an application stronger, so show how you will cover the skills you lack.
What should I do if my application is rejected?
Read any feedback, fix the gaps and reapply when you have made real progress. Baobab, for example, sends reasons and advises founders to work on them first. Lead your next application with what has changed.
How long does it take to hear back?
It varies. Y Combinator usually decides on the day of the interview and announces decisions for on-time applicants by a set date; Baobab says feedback takes 4 to 12 weeks on average.
Do accelerators charge fees?
Some do. 500 Global lists a $35,000 Phase 1 fee per startup for its Nairobi programme, although press coverage describes it as tuition-free, so ask whether it is covered. The Revise Accelerator is free to apply to and charges a programme fee only once you are accepted.
Keep reading
Sources
All pages accessed in September and October 2026. Programme rules change between cohorts; always confirm on the official page before you apply.
- Y Combinator: Apply
- Y Combinator: How to apply (Paul Graham)
- YC Startup Library: How to apply and succeed at Y Combinator
- Y Combinator: SAFE documents
- Y Combinator: the $500,000 standard deal
- Antler: Apply
- Antler Kenya
- Google for Startups Accelerator: Africa
- 500 Global: Sustainable Innovation Seed Accelerator Nairobi
- Inc. Arabia: 500 Global launches Sustainable Innovation Program
- The Baobab Network FAQ
- Madica programme
- Opportunity Desk: Katapult Africa Accelerator 2026
- All Business Africa: Norrsken Impact Accelerator 2026
