How to Become an Online Coach in the Balkans and Get Paid

How do you become an online coach in Bosnia, Serbia, Croatia or Montenegro and get paid by your first client?

You need five things: knowledge you can prove, a registered business once you start charging, one clear package with a price, a first client from your own network, and a system where the client gets the plan and checks in every week. The order matters: first the qualification and the business form in your country, then the offer, and only then the search for clients.

Updated 28 October 2026 This is a starter guide for coaches based in Bosnia and Herzegovina, Serbia, Croatia and Montenegro, not tax or legal advice. Confirm the rules for your situation with the competent authority or an accountant.

Step 1: a qualification clients and the state recognise

An online client never sees you in the gym, so your certificate and results replace the first impression. In Croatia it is also a legal matter: the Ministry of Tourism and Sport says every sole trade that carries out a sports activity is entered in the Register of Trades in sport, and for trainers and instructors the entry comes with proof of professional qualification under Articles 18 and 19 of the Sports Act (Zakon o sportu).

Programs you can check directly with the school (look at content and entry requirements on their sites, they change from one intake to the next):

• Bosnia and Herzegovina: BTC Fitness in Sarajevo, which lists EuropeActive accreditation and the EREPS register on its site, and MyWay Academy in Travnik, whose personal trainer course leads to an EREPS level 4 diploma.
• Serbia: Fitnes akademija in Belgrade (a personal fitness trainer program) and HFS from Novi Sad, which offers NASM personal trainer certification online.
• Croatia: Ustanova Magistra (a fitness trainer program approved by the Ministry of Science, Education and Youth), Fitnes učilište in Zagreb (a program at EQF level 4) and the coaching degree at the Faculty of Kinesiology in Zagreb.
• Montenegro: the Faculty of Sport and Physical Education of the University of Montenegro in Nikšić, and some trainers also choose online programs from Serbia.

If you are wondering what EREPS is: it is the European Register of Exercise Professionals, so a level label helps when a client comes from another country. A wider overview by country is in personal trainer certification by country.

Step 2: register the business before the first payment

Take your first payment only once the business exists on paper. The forms differ by country, so this is a map, not a replacement for an accountant.

In the Federation of BiH, according to the FBiH Tax Administration guide, flat-rate tax requires that you are not a VAT payer and that your activity meets the criteria in the rulebook. The guide dates from 2017, so always confirm amounts and conditions at your local tax office. In Serbia, the Tax Administration says the application for flat-rate taxation is submitted by 31 October of the current year for the following year, which matters if you are already an entrepreneur and want to switch to flat-rate.

E-invoicing and fiscalization are a separate topic and differ a lot from country to country. The overview for the whole region is in e-invoicing and fiscalization for trainers and gyms, and the country detail in our articles on fiscalization and eRačun in Croatia and fiscalization and SEF in Serbia.

Step 3: one package and a price you can explain

Beginners usually build a price list with five options. The client then takes ages to choose, and often never does. Start with one package with clear contents:

• a training plan adapted to the equipment the client actually has;
• nutrition guidelines or a meal plan, within the limits of your qualification;
• a weekly check-in with measurements and progress photos;
• a chat reply within an agreed time, for example the same or the next working day.

Set a price you can defend: how many hours a week one client takes, what you charge for in-person training, and how many clients you can realistically handle next to the job you already have. Do not copy someone else's "market rates" without a source. For a sense of in-person training prices, see our overview of personal trainer prices in Croatia, and for what nobody in the region measures, ask three colleagues in your own city.

Step 4: the first client comes from your network, not from ads

The first client is almost always someone who already knows you, or knows someone who trained with you. What works in practice:

1. Message three to five people you have already trained in person and offer them an online continuation, agreeing that you may use their before and after measurements.
2. Post one concrete story a week: what the client wanted, what you changed and over how many weeks, with no invented numbers.
3. Create a public profile on the Trainera marketplace for personal trainers, so people looking for a coach can find you.
4. Ask every happy client for one referral after the first month, not on day one.

Why results come before marketing is covered in first online coaching clients: get results before marketing.

Step 5: onboarding, the plan and check-ins

In the first days the client decides whether they paid for something good. So do the onboarding on the same day:

• An intake questionnaire: goal, experience, injuries and health limitations, schedule, equipment, eating habits.
• A first 4-week plan that fits the real schedule, not the ideal one.
• An agreed check-in day and what gets sent: weight, measurements, photos, how the week went.

In Trainera the client gets the training and nutrition plan in the free iOS and Android app, and you see check-ins, habits and messages in one place. You build programs from a library of 1,970+ exercises, and for nutrition you have 1,650+ recipes. The app runs in 28 languages, which helps when a client from the diaspora gets in touch. A checklist for the first week is in how to onboard online coaching clients.

Step 6: getting paid, including cash and bank transfers

Clients in the region pay in different ways, so offer more than one. In Trainera you can take online card payments, and you simply record cash and bank transfers. For recorded cash and transfers the platform takes nothing: the fee there is 0%. Online payments carry a platform fee that depends on your plan, and card processing is listed on the pricing page.

Prices are fixed per country: in Bosnia and Herzegovina they are in KM, in Croatia and Montenegro in euros, and in Serbia in dinars. See the current amounts for your country on the pricing page. You can run your first three clients on the free plan, so you pay nothing until you see the business working. How to set up monthly billing without a website is explained in recurring payments for personal trainers without a website.

Mistakes that slow down the first month

• Charging before the business is registered, then fixing the paperwork later.
• Five packages instead of one.
• A plan sent as a PDF with no agreed check-in: the client disappears in week two.
• Promising results in kilos and days that you cannot control.
• Nutrition or rehab advice outside your qualification.

Your plan for the first 30 days

Week 1: check your qualification and the business form in your country. Week 2: write one package and an intake questionnaire. Week 3: reach out to people in your network and open a marketplace profile. Week 4: onboard the first client, run the first check-in and take the first payment. Once your first client has spent a month with you, you have a result, experience and a first referral, and that is the base for everything that follows.

Create a free trainer account and run your first three clients in the Trainera app for trainers.