I've been self-employed, running my own business for 9 years. Some thoughts which may or may not be useful.
Setup - I have a Limited Liability Company. This means that if something goes horribly wrong I can walk away. The costs for this, and my payroll, come to about £1,500 a year. Unless you're a natural accountant then getting someone to do it for you is well worth it. By the way, accountants are
all mean with money.
The Bank - Cashflow is all important. You need a trustworthy bank manager (or business manager). You have to go to see them in person, every couple of months. You need to build up a relationship. Online accounts are no good.
Setup costs - There are costs for setting up the LLC.You'll need printing for leaflets and cards (try
Printcarrier.com - the printing people [ALL WE DO IS PRINT]).
Running costs - Transport (you will need a car). Fuel, food (never eat on on a job, always take your own, it'll save a fortune). Hardware. Christ, the computer hardware. You need to get that stuff shifted as fast as you can. If you've just bought £3,000 of computer hardware, the faster you get the money for that the better. It's better if you can get the client to buy the equipment. Why? Because, when your turnover hits around £56,000 you will have to register for VAT. Which means more paperwork.
Oh, and
always take a deposit. No matter
who it is. Nobody is your friend. Everyone is a client.
Breaking the law and taking cash without putting it through the books - This is illegal. It is also widespread due to the high costs of running a small business and the high costs of regulation. I've had eight tax rises (Income tax, NI, Employers NI, Corporation Tax) in the last nine years so I really can sympathise with the people who do it.
Discipline. This is
the hardest thing. When you've just come in at 8pm on Saturday night, and you know you're back out again on Monday morning at 8am, and that Sunday afternoon is the only chance this week that you will have to do your invoices, do you have the discipline to sit down and do them while all your friends are having a barbecue and drinking beer? If the answer is 'maybe', then self-employment may not be for you.
Customer turnover - Unless your customer base is extremely loyal you can expect to lose 25% of them every year. Some move, some lose your address, some use someone else. You need to advertise constantly.
Reputation - Your reputation is the most important thing. If people trust you they will recommend you. 90% of my work comes from recommendation. Those people know that I'm good, they know that I can be trusted and that is worth its weight in gold.
Loneliness - If you love the office vibe you will hate self-employment.
Contacts - This is so important. One good contact is worth a year's advertising. If you can find someone who knows everyone (head of the Rotary, pub landlord, that kind of thing) and who knows and trusts you and has used you, that person will also be worth their weight in gold. Get in on local committees, local groups (all free ones), get to know everyone you can.
Don't expect to break even for 18 months. You can expect poverty and penury and misery.
And I wouldn't change it for the world. There hasn't been a day gone by in the last nine years where I've woken up and wished I worked for someone. Not. One. Day.
Oh, I've wished for the money and the security. But I'm not prepared to pay the price. And there's something quite special about getting up on a sunny Wednesday morning when you don't have any work on and going for a walk while everyone's at work.