I went through that in the UK this year. I winced at how much and then they had the nerve to write back asking for another £2k ($4k)! I console myself with the fact that if people didn’t pay taxes a) we wouldn’t have the infrastructure we have and b) they’d get it from somewhere else anyway.
Sorry – that doesn’t answer the question…but over here, you get 3 months to pay then a £100 fine, followed by another 3 months and another £100 fine. After that it’s interest-based. I “deferred” that way last year! Maybe you have a similar setup?