Regarding the formal diet, you need to be on the exclusion diet for 8 weeks before attempting to reintroduce foods. This takes about one year to do properly. You will still experience unexplained flare ups. I would not suggest attempting the fodmap diet in the UK without speaking to a nutritionist first. You will need a go referral.
The AMT is the excess of the tentative minimum tax over the regular tax. Thus, the AMT is owed only if the tentative minimum tax is greater than the regular tax. The tentative minimum tax is figured separately from the regular tax. In general, compute the tentative minimum tax by:
Canadian GST/HST. The tax applied on the final sale of a product or service in Canada is called Sales Tax. GST: A Federal Tax called (GST - Goods and Services Tax) is levied by the federal government in every province in Canada. PST: In addition to GST, every province (except Alberta) levies a provincial tax called PST (Provincial Sales Tax).