Am in a bit of a panic. I'm self employed and am lucky as I have consistently made about 80k a year for the last few years. I do my own tax return online and always pay about 20k in tax. But I've just done mine now and it's asking for 38k! That includes a payment on account for next year, but I'm confused... wouldn't I have made a payment on account last year too, and all the other years?!
I have the money but it's still a hell of a shock!