When a side hustle becomes a business

A stranger asked whether you take custom orders. You said yes. You've now got three of them booked, you bought supplies specifically for them, and somewhere in the back of your head is a question about whether this counts as something official yet.

There's no moment. There's a test, and tax authorities in most countries work from a similar list of indicators rather than from a single number. The short version: are you doing this repeatedly, in an organised way, with the intention of making money? Selling the coat you wore for four years isn't trading. Buying four coats in order to sell them is trading, from the first one, at any amount.

Which means the honest answer for most people reading this is that you crossed the line a while ago, probably around the time you bought your first 200 mailing bags, and that this is a smaller problem than it feels like.

The indicators, in plain words

No single one of these makes you a trader. They're read together, and the more of them are true, the less arguable it gets.

Did you buy it to sell it? The single strongest one. Something you acquired for yourself and later sold is a disposal. Something you acquired in order to sell is stock.

How often? One sale is an event. Forty is a pattern. Frequency and repetition are what turn a series of disposals into a trade.

Are you trying to make money on it? Not "did you", "are you trying to". Selling at a loss doesn't get you out of this.

Did you change it to make it sell? Repairing, cleaning, restoring, re-dyeing, cutting a bolt of fabric into pieces, restringing a guitar. Work done to increase saleability points hard at trading.

How do you sell it? A shop link, a business name, advertising, a market stall, a catalogue, a delivery option. These are all things traders do and things private sellers mostly don't.

How quickly do you turn it over? Buying and selling within weeks looks like trading. Selling something you've had for eleven years does not.

How did you fund it? Borrowing money, or using a supplier's credit, to buy things you intend to sell is a strong indicator, because nobody borrows to fund a hobby's inventory.

Is it organised like a business? Records, a separate account, a supplier account, a name, an insurance policy, a pricing sheet. Organisation is itself evidence.

The clearest evidence you're trading isn't your revenue. It's your purchase history. Nobody buys 200 mailing bags for a hobby.

Three sellers, one obvious each way and one that matters

Tom, records, Sheffield

Tom is 54 and has been buying records since he was nineteen. Over the past year he's listed about 40 of them, mostly between £6 and £30, and taken roughly £520.

He isn't trading. He owned them, he bought them to listen to, he's had most of them for over a decade, and he's selling them because his flat is small. The frequency is high-ish and everything else points the other way. If he started buying job lots at car boot sales to relist, that would flip in a single afternoon, and it would flip from the first lot.

Kemi, wigs, Lagos

Kemi buys 20 wigs a month from a supplier, lands them at about ₦18,000 each and sells them at ₦34,000 through Instagram and a shop link. She has a WhatsApp catalogue, a dispatch rider she uses regularly and a returning customer list.

She is trading, and she was trading on the first wig, at the first sale, before she'd made any profit at all. There is nothing ambiguous here and no threshold she's waiting to cross. The intention was there before the stock arrived.

Ana, cakes, São Paulo

This is the one worth the space, because it's where nearly everybody actually is.

Ana started baking for friends. The first few were free. Then a colleague asked for a strawberry cake for a birthday and insisted on paying, so Ana asked for R$85, which roughly covered ingredients and nothing else. Then that colleague's sister messaged. Then a stranger.

Four things happened over about five months, and each one moved the line:

1. She bought a second sheet tray specifically so she could do two cakes at once. That's an investment in capacity, made in order to sell more.
2. She started a separate Instagram account for the cakes, with prices in the highlights. That's advertising.
3. She raised the price from R$85 to R$120, because R$85 was losing money once she counted her Saturday. That's an intention to profit, stated in numbers.
4. She turned down a booking because she was already full that weekend. That's a capacity decision, and it's the one that gives it away.

If you asked Ana when it became a business, she'd say around month nine, when she registered something. It became a business somewhere around the second and third items on that list, four months earlier. The feeling lags the fact, reliably, and a year is a fair estimate of the gap.

The other reason the label matters, if you're in the US

Everything above is about whether you owe a report. In the United States there's a second consequence, and it runs the other way.

If an activity is a business, losses from it can generally be set against your other income. If it's a hobby, they can't, and you can end up declaring the income without getting the relief on what it cost you to earn it. That's a worse outcome than being a business, which surprises people who assume "hobby" is the safe answer.

The IRS looks at a list of factors, and it's recognisably the same list as everyone else's: whether you carry it on in a businesslike way with proper records, whether you have the expertise or took advice, how much time and effort you put in, whether you depend on the income, whether your losses are the ordinary start-up kind, whether you've changed your methods to try to become profitable, and how much personal pleasure you get from it. That last one is real and it's why "but I love making candles" is not the defence people think it is.

There's also a widely repeated rule of thumb about needing a certain number of profitable years within a certain window to create a presumption in your favour. Something like it does exist, the numbers matter, they differ by activity type, and this article isn't going to state them. Read it on the IRS's own site before you plan a tax position around it.

The practical takeaway is boring and useful: keep proper records, price to make money, and be able to show you were trying to. Those three things are what separate a business from a hobby in every framework, and doing them costs nothing.

What actually changes when you cross

Less than you fear and more than you'd like.

You have income to report, from the point you started trading, not from the point you noticed. This is the one that catches people, because registering late doesn't move the start date. If you crossed in March and worked it out in November, March is still the answer. What to do about tax on online sales covers the shape of that reporting, and the fact that you're taxed on profit rather than on what landed in your account.

You need records that go back to the start. Which is a nuisance if you kept none, and entirely survivable if you do a backfill pass now rather than in March. Keeping records when you hate paperwork has a recovery procedure for exactly this situation, worked biggest-transaction-first so you don't run out of energy in week two.

Your obligations to the buyer change. In a lot of countries a private seller and a trader owe a buyer different things. Description accuracy, returns, cancellation rights on distance sales, how long the buyer has to complain. The person who bought a cake from a friend has different rights from the person who bought a cake from a business, and once you're the second thing you're held to the second standard whether or not you've registered anything. Writing terms people will actually read is where to put what you're now committing to.

Your exposure changes. You're selling food, or something that goes on skin, or something a child might swallow, to strangers who don't know you. Whether you need cover, and what kind, is a real question with a real answer, and insurance and what can go wrong is the place to work it out rather than hoping.

Some rules stop being optional. Food hygiene registration, cosmetics safety assessments, labelling requirements, whatever your product category demands. These are triggered by selling to the public, not by revenue, and they applied to the first cake.

Registration may or may not be needed. It's a separate question with separate triggers, and it usually arrives later than the reporting obligation does. Do you need to register your business sorts out which of the three things people call "registering" you actually need.

What doesn't change

Some reassurance, because the internet is bad at this.

Being a trader doesn't automatically mean you owe tax. You owe tax on profit above whatever your country's allowances are, and a first year with a new oven, a stack of packaging and a lot of ingredients frequently produces very little profit or none.

It doesn't mean you need a company. Most one-person operations run perfectly well in the default individual structure.

It doesn't mean you need an accountant, software, a logo, a website or a plan. It means you need to write things down and tell the right authority the right number once a year.

And it doesn't mean you can't scale back down. Plenty of people trade for two years and stop. Stopping is administratively easier than starting.

The signals that make it obvious to anyone looking

If you're genuinely unsure which side of the line you're on, look at what an outsider would see. These are the things that make the answer obvious to a tax officer, a bank, or a lawyer acting for an unhappy buyer:

• A shop link with prices on it
• A trading name that isn't your own name
• A supplier account, or repeat purchases from the same wholesaler
• Bulk packaging purchases
• Money spent on advertising or boosted posts
• A stall booking, a market pitch, a pop-up
• Consistent inventory buying, month after month
• A separate account, a separate phone, a separate email

Four or more of those and the conversation is over. You're trading. That's not an accusation, it's a description, and it's the point at which arguing about the definition costs you more than complying does.

The order to do things in, the week you realise

Don't try to fix everything. Do these five, in this order, and the rest follows.

1. Write down the date you think you started trading, and one sentence on why. If it's ambiguous, pick the earlier date. You will never regret picking the earlier date.
2. Reconstruct the money in. Bank credits only, from that date. Ignore expenses for the first pass. This is quick and it's the number everything else hangs off.
3. Open a second account and route the shop's money into it from today, so the reconstruction problem stops growing. Nothing needs registering to do this.
4. Find out your country's actual reporting requirement, from the tax authority's own site, and write down the date you looked it up.
5. Start recording from today, whatever state the past is in. A clean line from now is worth more than a perfect reconstruction of last year.

Notice that registering isn't on that list. It's usually the last thing rather than the first, and doing it first is how people end up with annual filings for a business that made £600.

Where Sailo sits in this

Worth being blunt about, because it cuts against us.

Sailo has no hobby mode and no quiet mode. The moment you publish a link with prices on it, you look like a trader to everyone who reads it, and that reading is correct. The shop is advertising, the prices are an offer, and the order button is an invitation to buy. If you're currently telling yourself this is just a thing you do for friends while running a public catalogue, the catalogue is the more honest witness.

There's also nothing in the product that checks your position, warns you about a threshold, or knows what your country requires. It won't tell you that food needs a registration or that you've started trading. It'll take the order.

And a plain limitation: the free plan caps at 10 products and keeps 7 days of analytics. That's genuinely enough to test whether a hobby has a business in it, which is the useful thing about it. It is not enough to run a second year off, and if you're going to need to account for a period longer than a month, export your orders and keep the file yourself.

Do this today

Open your bank app and your card statements and answer one question: how much have you spent, in the last six months, on things you bought in order to sell?

If that number is meaningfully above zero, you're trading, and the date of the first of those purchases is roughly your start date. Write it down.

Then do step three from the list above, which takes about ten minutes and stops the problem getting worse while you work out the rest.