Erasmus+ Key Action 1 (KA1) grants can look straightforward on paper, but budgeting becomes difficult when you try to turn “unit costs” and “rates” into a real plan that your team can deliver, report, and justify.
This guide translates the rules into practical decisions you can make while planning mobilities, selecting participants, and choosing learning activities, especially if you are doing erasmus writing for the first time.
By the end, you will know how KA1 funding is structured, how to calculate and stress-test the main budget categories, what evidence you typically need to keep, and how to match spending to your activities and learning outcomes without breaking erasmus+ financial guidelines.
How KA1 funding is structured
The KA1 funding is the central reference for participation and funding conditions, so your budget must follow the eligible cost rules and reporting requirements set by the programme and your National Agency.
Under KA1, most grant funding uses simplified cost options, meaning “unit contributions” are paid for pre-defined cost categories rather than reimbursing every individual receipt line. This model is designed to simplify reporting and put more emphasis on results and measurable objectives.
The two sides of the KA1 budget
For many erasmus+ projects, you can think of the KA1 budget as two parts: unit contributions and actual costs.
Unit contributions typically cover categories such as travel support, individual support, organisational support, inclusion support for organisations, course fees, linguistic support, and preparatory visits, depending on the activity format.
Actual costs are used for selected categories such as inclusion support for participants and exceptional costs, where you must report and document the real expenditure.
Why this matters for realistic budgeting
Because unit contributions are a proxy for underlying costs and not an exact reimbursement, a “compliant” project may still require your organisation to cover some additional costs that are not captured by the Union contribution. Planning for this is part of sound financial management and helps avoid delivery problems later.
At the same time, the system includes strict anti-double-funding logic: you cannot claim the same type of cost twice from two EU sources, and some actual-cost categories prohibit claiming overlapping unit contributions for the same participant and cost type.
Budgeting the big four KA1 categories
This section focuses on the four lines most applicants actively plan around: travel, individual support, course fees, and organisational support. Together, they form the core of many KA1 mobility budgets.
Travel support
Travel support is normally calculated with distance bands. You determine the distance using the official Distance Calculator, which shows a straight-line distance, and the one-way distance is used to select the band that funds the round trip.
A realistic travel plan should specify the place of origin and the venue, because if you report a different start or end point, you may need to justify the difference in your report.
Travel time is not counted when determining compliance with minimum eligible duration of mobility activities, so your schedule should meet eligibility requirements based on activity duration, not on the journey itself.
Travel support is normally payable only if the participant has actually undertaken the activity, which is why proof of participation is part of your travel budget planning.
Green travel has its own rules and documentation expectations. Some grant annexes define sustainable means of transport (for example: bike, bus, car-pooling, and train) and state that green travel applies when sustainable means are used for the majority of the round trip. They also note that the National Agency may accept other means as sustainable on a case-by-case basis.
A simple budgeting formula is:
Travel support = participants (and eligible accompanying persons, if applicable) × unit contribution for the selected distance band and travel type.
If unit travel support would not cover at least 70% of the real travel cost, some KA1 agreements allow you to claim “expensive travel cost” under exceptional costs, supported by invoices that show the travel route and payment.
Individual support
Individual support is intended to cover costs directly linked to subsistence during the activity. Rates are usually tied to the receiving country and are set either as fixed amounts or within ranges that National Agencies select from.
For some activity types, the base rate is payable up to the 14th day of activity, and from the 15th day the payable rate becomes 70% of the base rate.
Your calculation needs three decisions before you start multiplying anything: first, how many eligible activity days each participant will complete; second, whether travel days can be added for the activity; third, how you will handle interruptions and early termination.
From a compliance perspective, individual support is generally paid only if the participant actually undertakes the activity for the specified period. In cases of interruption, the interruption period is normally not counted, and force majeure rules may allow payment for the actual eligible duration completed.
Course fees
Course fees apply when staff participate in “courses and training” that require a paid course fee. Many National Agency rate tables calculate course fees per day and set a maximum cap per participant, so you should budget based on paid learning days only.
A common rule in KA1 annexes is that only the days during which the learning activity actually takes place are counted for course fee unit contributions.
This becomes especially important when budgeting erasmus ka1 courses that include optional cultural or networking activities that are not part of the paid course programme.
Organisational support
Organisational support covers costs directly linked to implementing mobility activities, excluding participants’ subsistence and travel.
In higher education international mobility guidance, the describes organisational support as covering implementation tasks such as selection, linguistic preparation, and support around visa and insurance. While the exact permitted uses vary by action format and agreement, this description captures the core logic: organisational support is the delivery budget for making the mobility work.
As a technical check, verify who counts as a “participant” for organisational support. Some KA1 annexes state that accompanying persons and people on preparatory visits are not counted in the organisational support calculation.
Other budget lines you should not forget
Depending on your KA1 format, you may also have unit contributions for inclusion support for organisations, linguistic support, and preparatory visits. These are calculated with their own units and have their own triggering events and evidence expectations, so they deserve a quick check during budgeting.
Inclusion support for organisations is typically calculated by multiplying the number of participants with fewer opportunities by the applicable unit contribution, and it may require additional proof that the participant fits an admissible category of fewer opportunities.
Linguistic support, where applicable, is generally payable only if the participant actually undertakes language preparation and you can provide proof of attendance or a signed declaration from the course provider or the organisation delivering the training.
Preparatory visits are usually paid as a unit contribution per person, triggered by undertaking the visit, and supported by a signed agenda that lists participants and is signed by the visiting persons and the hosting organisation.
Compliance-first budgeting: what to plan for and what to keep
A compliant KA1 budget is not just a set of calculations. It is a plan for delivering activities plus a plan for producing the evidence that triggers payment. This is the operational side of erasmus+ financial guidelines.
The “trigger event” logic
Across multiple budget categories, grant annexes often state a similar rule: the unit contribution is paid only if the participant has actually undertaken the activity. That means budgeting must include organisational steps like confirming attendance and tracking correct start and end dates.
Evidence you should plan to collect
For travel and individual support, annexes commonly require proof of attendance signed by the hosting organisation and the participant, and this proof should specify learning outcomes and the activity dates.
For green travel, some agreements accept a declaration of honour as supporting documentation, while still telling beneficiaries to inform participants that they may need to keep proof of travel such as transport tickets if requested.
For course fees, the standard expectation is proof of enrollment plus proof of payment, usually via an invoice or declaration issued by the course provider that includes the participant name and the course dates.
For participant reporting, grant annexes may require participants to submit the standard online participant report and warn that failure to submit can lead to partial or full recovery of the financial contribution.
When actual costs apply
Inclusion support for participants is commonly reimbursed as 100% of eligible costs actually incurred, meaning you must budget for real prices and plan invoice-level documentation.
There can also be a strict “no overlap” rule: if travel and individual support are reimbursed as part of inclusion support for a participant, then unit contributions for those same categories cannot be requested for that participant.
Exceptional costs are often reimbursed at 80% of eligible costs actually incurred, with some sub-items reimbursed at 100%. They can include expensive travel, visa and residence permit costs, and other items listed in the agreement, each with specific supporting documentation requirements.
Matching spending to activities and learning outcomes
Budget credibility is a quality issue. The cost structure is designed so that when you choose an activity, the eligible cost categories and required evidence follow logically from that choice.
For erasmus+ projects, build a short “budget logic chain” before you write your narrative: activity choice, intended learning outcomes, attendance and recognition evidence, then the budget categories triggered by completing the activity.
This approach makes your application clearer because you are not just “asking for money”. You are showing what the resources are for and how they lead to measurable outcomes, which strengthens erasmus project writing.
Conclusion
KA1 budgeting becomes manageable when you treat the grant as a set of rule based unit contributions linked to real activities, with a smaller number of categories reimbursed on actual costs. The most reliable approach is to design the activity and learning outcomes first, then build the budget around distance bands, eligible days, and documentation requirements.
If your evidence plan is as strong as your cost plan, you can deliver mobilities smoothly and remain compliant from application stage through to the final report. Many organisations strengthen this process by validating their planning with experienced partners such as Alfa Edu, especially when aligning learning design with financial rules.
Use these principles to make erasmus writing and budgeting work together in practice: clear activities, clear outcomes, clear calculations, and clear documentation. When these elements are aligned, financial compliance supports quality rather than limiting it.
