Hi. Sorry it's long.
My brain is getting scrambled by HMRC website.
Please can someone help?
I have registered on SA1. I've got a tentative first order for cushions and blinds which could be worth a few hundred pounds in profit. This morning I've discovered that my cherished 30 year old Pfaff sewing machine was broken when I loaned it out last week.
I have a part time job that pays well.
If I buy a new machine, I can claim 18% of the total cost of it as a Capital Allowance in the first year, then 18% of its depreciated value year on year?
Have I got that right?
So if I buy a mega machine (say £1000 +) will I get 18% Capital Allowance reduction of the tax I pay on my current salary?
And would that also apply to business expenses like the petrol money to Ikea and the fabrics I bought there to make up samples for my client? (Ooo 'client' sounds so exciting!) 
Does it count that I have nothing in writing to show I have a business other than a Mumsnet thread and a paid for domain name? No one's bought anything from me yet as I only took the plunge this week and decided to go for it.
Who's to say I haven't decided I want a lush sewing machine and set up a 'business' so I can get it taken off my tax on salary?
And would it be best to wait for the new tax year before buying one or get it now?
Thanks in advance.