Updated 26.7.2026
Guide
Common Mistakes New Light Entrepreneurs Make
Five common mistakes and how to avoid them
The most typical pitfalls for a new light entrepreneur are underpricing, relying on verbal agreements, losing receipts and documents, forgetting the tax card, and trying to handle everything alone. What they all have in common is that each one is easy to avoid beforehand and hard to fix afterwards.
These mistakes don't come from carelessness — they happen because habits from salaried work don't automatically apply to gig work. As an employee, someone else priced your work, drew up contracts and handled taxes. As a light entrepreneur, pricing and agreements are in your hands, even though Truster takes care of invoicing, payroll and employer obligations on your behalf.
Let's go through the mistakes one at a time: where they come from, what they look like in everyday work, and the simplest way to fix each one.
The good news is that avoiding these mistakes doesn't take years of experience — just a few simple routines: a price based on real calculations, written confirmation for every agreement, saving receipts the moment you buy something, and regularly checking your tax card. You'll pick up the rest along the way. The key is to adopt these routines from your very first gig, so they become habit rather than an extra burden you have to remember to carry.
Underpricing is the costliest mistake
New entrepreneurs almost always price their work too low, and it's an understandable mistake: your own hourly rate feels high when compared to an employee's hourly wage. But the comparison is flawed. Your hourly rate also needs to cover work that no one pays for directly — quotes, client communication, travel and admin — plus holidays, sick days and quiet periods that are automatically compensated for employees.
The nastiest thing about underpricing is that it's a self-reinforcing trap. A low price fills your calendar but not your bank account, and you end up doing too much work relative to what it actually earns. Raising prices for existing clients is always harder than charging the right price from the start. A cheap price can also signal poor quality to some clients.
The fix: first calculate how much you need to earn per month, add the share of unbilled work and service costs, and derive your hourly rate from that. Truster's service fee is 3.99% or, alternatively, €55/month, so it's easy to factor into your calculation. When your price is based on a real calculation, it's much easier to stand behind it when a client tries to negotiate.
When discussing price, remember VAT too. VAT is generally added to the invoice total — the standard rate is 25.5% — and Truster takes care of adding it to your invoice. Quote business clients the price excluding VAT, as is customary, and consumer clients the price including VAT, so your quote isn't misunderstood. Do your own pricing calculations using VAT-exclusive prices, since VAT isn't your income — it's just passed through.
A verbal agreement is a dispute waiting to happen
A verbal agreement is legally binding, but its content is nearly impossible to prove afterwards. When the work, price and schedule are agreed over the phone or with a handshake on site, both parties walk away with their own version of what was said — and those versions tend to diverge exactly when something goes wrong. The most common dispute isn't born from bad intent, but from both sides understanding the same conversation differently.
The solution doesn't require a lawyer. Simply confirm what was agreed in writing: after the conversation, send a short message or email repeating the scope of work, price, schedule and payment terms, and ask the client to acknowledge it. That single message turns a verbal agreement into a documented one and eliminates most future disagreements.
Be especially careful to record changes. Work often evolves along the way: the client wants more, materials change, the schedule shifts. Any change that affects price or schedule should be confirmed in writing before it's carried out. That way the invoice won't come as a surprise to the client, and you have evidence if it's ever questioned.
Create yourself a ready-made quote template with fields for the scope of work, price, schedule, payment terms, and what's excluded from the price. Filling in a template takes a fraction of the time that informal agreements and later disputes would cost. The exclusions section is especially important: when you spell out what isn't included in the price, agreeing on extra work feels natural rather than awkward, and the client knows from the start exactly what they're paying for.
Keep your receipts and your tax card in order
Losing receipts is a small habit with a real cost. Work-related expenses, such as tools, supplies and travel, can be tax-deductible — but only if you can prove them with receipts. A faded receipt in a jacket pocket helps no one. Make it a habit to photograph receipts on your phone the moment you buy something and save them to one agreed location.
Forgetting the tax card is another classic. Truster withholds tax from your pay based on your tax card, so submit it right away. It's equally important to keep the income threshold on your tax card up to date: if your income grows beyond the estimate, the withholding won't be enough and you may face a back tax bill. You can check the income threshold and request a new tax card in OmaVero (the Finnish Tax Administration's online service).
A good rule of thumb: document as you go, check regularly. Save receipts the same day, and review your tax card whenever your income level changes noticeably. These are minute-long routines that save hours of untangling and unpleasant surprises later. You'll find up-to-date guidance on deductions and their conditions at vero.fi (Finnish Tax Administration).
Get familiar with OmaVero early on: there you can check your tax card's income threshold, order a new card, and view your tax information without any queuing. Up-to-date guidance on light entrepreneur taxation and deductions is available at vero.fi. Once these services feel familiar before things get busy, tax matters won't grow into something scary — they'll just become part of your regular routine.
You don't have to do everything yourself
The last, and perhaps sneakiest, mistake is trying to do everything yourself: pricing, sales, the work itself, customer service, paperwork, and learning it all at once. That leads to the billable work — the one thing that actually brings in money — getting pushed aside by everything else. An exhausted worker also isn't a great salesperson or a careful pricer.
Think about what's actually your job and what could be handed off to others or to tools. Light entrepreneurship itself is the result of this thinking: Truster handles invoicing, payroll, tax withholding and reporting, so you can focus on the work and your clients. You can apply the same logic elsewhere: a ready-made booking system, a receipt app that does the bookkeeping-like heavy lifting, or a fellow entrepreneur you can pass unsuitable gigs on to.
Build yourself a network too. Other light entrepreneurs in your field or related ones aren't just competitors — they're peer support, a source of gigs, and someone to ask for advice. Many experienced light entrepreneurs say the single most important lesson from their early days was to stop struggling alone and start asking questions.
Remember you're not alone with invoicing either: Truster's customer service helps with questions about invoicing, payroll and using the service. Asking is the fastest way to learn, and many beginner mistakes never happen when you check something before sending the first invoice rather than after. Also set aside a regular slot in your calendar for admin tasks, so small chores don't pile up into a big one.
Frequently asked questions
How do I know if I'm pricing too low?
Calculate your real hourly rate: divide the income from a gig by all the hours it took, including travel, communication and preparing the quote. If the result is clearly below what you need to cover living costs, taxes and quiet periods, your price is too low. A full calendar but an empty bank account is a classic sign of underpricing.
Is a verbal agreement legally valid?
Yes, but its content is hard to prove afterwards. That's why a verbal agreement should always be confirmed with a short message or email repeating the scope of work, price, schedule and payment terms, asking the client to acknowledge it. A written confirmation prevents most disputes.
Why should I keep my receipts?
Work-related expenses, such as tools and supplies, can matter for tax purposes as deductions — but only with receipts as proof. Photograph the receipt the moment you make the purchase and save it in one place. You'll find up-to-date guidance on deductions at vero.fi.
What happens if I forget my tax card?
Without a submitted tax card, tax withholding is done at a higher rate, meaning you take home less than you should. Submit your tax card right away and keep its income threshold up to date in OmaVero, especially if your income changes from the estimate. This keeps the withholding in line with your actual income so a back tax bill doesn't catch you by surprise.
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