If you're a registered business with a tax ID number, you can deduct sales taxes paid on business inputs (supply) on your income taxes, whether personal or business.
However, you can only deduct items so acquired for business purposes, not for personal purposes.
I think this means that paying $10 would reduce your income tax by $3 (if income tax is 30%). This is different from getting a 100% credit ($10) which is what you'd get with a VAT system.
If for some reason you can't offset your input VAT, then you get the same deduction against your income as you would for a sales tax, because it's part of your expenses. BUT NOTE: that if the acquired good is depreciated, then in both cases (VAT or sales tax) the tax-related deduction is spread over several years rather than all at once.