Ive had this argument with strata managers in the past
The situation is that even if you do not pay tax, a nil tax return needs to be filed. Somene has to do it, and if the strata manager arranges a tax accountant to do it, and the management agreement states its one of the charges they can make, then you have to pay up.
Once you are on the tax merry go round, its very difficult, but not impossible to get off. Dont expect the strata manager or accountant to assist.