Budget example
A typical cost split for a open-source tool dream in Barcelona, shown in EUR. Backers pay you directly using your accepted payment methods.
Example goal
€7,100
- Core engineering and maintenance€4,970 · 70%
- Test infrastructure and hosting€710 · 10%
- Documentation and worked examples€710 · 10%
- Release and community support€710 · 10%
What you receive
- Backers give
- €7,100
- 0% platform commission
- −€1,065
- You receive
- €6,035
- 01
Price from quotes, not hopes
Get at least two quotes for every large cost and note what is included. Backers rarely mind a high goal; they mind a goal that looks invented.
- 02
Plan for what you receive
cohero takes 0% commission on backings, so you receive what Backers send directly through your payment methods. Set the goal so that amount covers your real costs.
- 03
Add a small buffer
Prices move. A buffer of five to ten percent in your last milestone covers surprises without making the goal look padded. Say so openly in your story.
Example milestone plan
An example plan for a open-source tool dream with a goal of €7,100. Backers pay you directly, funding the goal all at once or milestone by milestone as you post proof for each step.
Milestone 1
€1,775 · 25%
Publish the technical scope
Post a repository link, a design note and a minimal runnable example explaining the problem and the planned interfaces.
Milestone 2
€2,485 · 35%
Implement the core tool
Share tagged source changes, automated test output and a recorded example showing the main function with sample inputs.
Milestone 3
€1,775 · 25%
Check compatibility and docs
Upload a compatibility matrix, fresh installation results and draft documentation tested against the current version.
Milestone 4
€1,065 · 15%
Prepare contributor release
Post release notes, contribution instructions and an issue triage plan with links to the final examples and known limitations.
Risks to plan for
- R1
Dependencies break compatibility
An upstream change can make installation fail even when the tool code is unchanged. Define supported versions early and budget for automated compatibility checks and fixes.
- R2
Maintainer workload expands
Support requests can displace planned development work. Limit the funded feature scope and reserve the final milestone for contribution guidance and a manageable issue triage plan.
- R3
Examples hide setup problems
A tool may run only in its creator’s environment. Include fresh installation tests on the supported setups and fund documentation fixes before presenting the release as complete.
How Backers are protected
14-day review per milestone
When proof is posted, each Backer has 14 days to review the proof, ask for more info, and decide whether to keep supporting your next milestone.
0% commission — direct gifts, nothing taken
Backers pay exactly what they choose directly through your payment methods. cohero takes 0% commission on backings, so you keep what is sent. Any refunds or disputes are handled directly between you, the Backer and your payment provider.
Gifts, not shares
Backings are gifts. No shares, equity, interest or repayment, and Dreamers keep full ownership. Nothing on cohero is an investment or a loan.
Questions and answers
What counts as proof when the work is mostly maintenance?
Link to resolved issues, source changes and test results that show the supported versions still work. Include a reproducible example or installation check so Backers can assess maintenance beyond a list of commits.
Does cohero take a commission on backings?
No. cohero charges 0% commission on backings. Backers pay you directly to your chosen payment method, so towards your goal of €7,100, you receive the full amount confirmed by you without platform deductions.
Why fund an open-source tool if anyone can use the code?
The dream can fund the engineering, testing and documentation needed to make public code useful. Explain the specific work being supported and provide repository evidence rather than implying Backers buy exclusive access.
Ready when you are
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