If you run a car, scooter, or bike rental, you know the drill: margins are thin, competition is everywhere, and buying more vehicles isn’t always the answer. What if there was a way to earn extra revenue from clients you already have — without expanding your fleet, hiring anyone, or spending on ads? Turns out, there is. And one small scooter rental in Sri Lanka has the numbers to prove it.
How Car Rental Businesses Can Generate Extra Revenue
Skeptical? Fair enough. Let’s skip the theory and go straight to a real case — a diamond-level IDA agent with actual numbers, actual payouts, and screenshots you can check yourself.
Who is this agent?
- Country: Sri Lanka
- Business: Small scooter rental near Colombo
- Locations: Just 1 (not even in the capital)
- Agent ID: #1424
- Registered: March 31, 2025
No chain, no franchise, no marketing department. Just a regular local rental shop that decided to give the IDA referral program a try — and stuck with it.
The results after 8 months
From March 31 to December 4, 2025, here’s what Agent #1424 pulled off:
- 637 referred leads
- 355 confirmed sales
- 4 cancellations
Let’s unpack that:
- Conversion rate: ~55% — more than half of every referred lead turned into a paying customer
- Cancellation rate (from sales): 1.13% — just 4 out of 355
- Cancellation rate (from all leads): 0.63%
All the data is visible in the screenshots from his dashboard at the bottom of this post — orders, balances, everything.

Why conversion rate matters for you
If you’re considering the referral program, there’s really one number you should care about most:
How many of the people you refer actually end up paying?
In this case, the answer is: more than half. And only about 1% of those paying customers ever cancelled. What does that tell you?
- The clients are happy with what they get. They pay, they receive the document, and they almost never ask for a refund. That’s a product that sells itself once you point people to it.
- Your effort isn’t going to waste. A 55% conversion rate means every QR code you show, every link you share, every quick mention at the rental desk — it actually works.
- You’re giving your clients something useful beyond today’s rental. They don’t just get help for this trip — they get a document they can use in dozens of countries, long after they’ve returned your scooter.
That’s what makes this a genuine win for everyone:
- We get a new client through a trusted local partner.
- You earn referral income and offer a better experience to your renters.
- Your customers walk away with a document that’s useful far beyond your rental shop.
How Much This Agent Earned: A Real Extra-Income Case
Here’s the part people usually want to see first. Below is a screenshot from our bank account showing every transfer we sent to Agent #1424.

- Total payouts: 1,943,907.42 LKR
- Approximate equivalent: ≈ 6,325 USD
And all of this was earned:
- without building a separate business,
- without hiring extra staff,
- without running paid ads or complicated campaigns.
He just wove the referral program into his day-to-day rental operations. A QR code here, a quick mention there — and the numbers added up.
Is $6,300 in eight months going to make anyone retire early? No. But for a small scooter rental outside Colombo, that’s a very meaningful chunk of extra money — essentially free profit on top of the rental business he was already running.
Why This Revenue Model Works for Rental Agencies
In just 8 months, this agent climbed to the 43% revenue-share level in our program. That means every new referral now earns him a bigger cut than when he started. The more he refers, the better the deal gets.
And here’s what’s worth emphasizing — there was nothing special about his starting position:
- One location. Not even in the capital.
- A standard scooter rental — no luxury fleet, no big brand.
- No prior experience with referral programs.
The takeaway: any rental with a similar or higher volume of customers can realistically get comparable results — as long as you actually do it consistently. Show the QR code, mention the service, make it part of the routine.
Results will vary depending on your traffic, the season, and how proactively you mention the offer — but the opportunity is clearly there.
How to Start Earning Extra Revenue as an IDA Agent
This can work for you if you’re:
- running a car, bike, scooter, ATV, or any other kind of rental,
- working at a travel agency, tour desk, or hotel reception,
- or simply in regular contact with travelers who might need internationally recognized documents.
What you don’t need:
- complex integrations or technical setup,
- a separate website,
- additional employees.
What you do need:
- a steady flow of clients or inquiries,
- a natural moment in your process to mention the service — at the desk, via QR code, through WhatsApp, in a confirmation email, wherever it fits,
- and the discipline to do it every time, not just when you remember.
Ready to start your own case?
Register here and you’re up and running: https://idaoffice.org/agent/register/
Once you’re in:
- You get your own referral tools — links, QR codes, whatever works for your setup.
- Every lead and sale shows up transparently in your “My orders” dashboard.
- Payouts go directly to your bank account — just like they did for Agent #1424.
Maybe the next case study on this blog will be about you.
Bunch of screenshots
All screenshots below — no personal data shown, full transparency on the numbers.













Screenshots of My balance page
Other real cases of additional income for small business
How a recruiting agency in Malta earned €72,000 in 5.5 years.
A travel agency in Saudi Arabia issued 555 documents with zero cancellations.
How notary, translation and multiservice offices can earn extra income.
FAQ
How can a car rental business generate extra revenue without large investment?
By referring your existing customers to IDA for international driving documents. No inventory, no extra staff, no upfront costs — just a referral link or QR code that you share as part of your normal rental process.
How much can a small rental realistically earn?
It depends on your client volume and how consistently you promote the service. The agent in this case — a single-location scooter rental — earned over $6,300 in eight months. Busier rentals or those in more tourist-heavy areas could do significantly more.
Published December 04, 2025 • 6m to read