[kazinator]

Ah okay. What did deductible mean in that jurisdiction? Was it a straight write off, or a tax credit?

Where I am in Canada, tax deductions are shitty because they come off the bottom of your income, so to speak. That is to say, the eligible expenses are added up and the lowest tax bracket rate is applied to them. You then get that as a tax credit. That's shitty because you paid for those expenses with your post-tax dollars at your full tax rate, but the credit is for a low tax rate.

Whereas a write-off comes off your income pre-tax, and so the benefit effectively operates at the marginal tax rate, and can knock you into a lower bracket.

[rileymat2]

USA, in the USA deductions come off the top like your writeoffs.