How about setting up a system which allows people to make advance IVA (VAT) and tax payments and grant those who do this a reduced rate of tax and/or use the interest generated on such advance payments to cover the some of the lost income resulting from the reduced tax rates?
It’s a mad idea, I know, but it might encourage more Italian businesses to actually pay taxes. And it may help businesses plan cashflow a little better too, I think.

Stop reading, start speaking
Stop translating in your head and start speaking Italian for real with the only audio course that prompt you to speak.
You would need online access to your current tax and IVA position in real time too, as this would help you understand how much you can put aside for future tax/IVA liability. However, with the wonders of technology, setting this up should be a doddle.
A nutty idea? You tell me.