145 karma · joined November 7, 2019
This very likely does not make a difference on your total tax bill, especially now that other deductions are limited (like mortgage interest).
Also, even if sales tax paid did make a difference on your tax paid, there is a simple calculator that estimates your sales tax paid that you can use instead of summing sales tax over all transactions.
If you want to play around with different scenarios, I recommend you try the tool "Excel1040" [1]. It is free but consider a donation. Works great in LibreOffice Calc but pay attention to the loading instructions.
And if by "commercial" you mean "for the business market, not the consumer/home market", then that is also wrong. Plenty of consumer grade laser printers, including mine, print yellow tracking dots. If the EFF is correct, essentially all laser printers sold now put some sort of tracking info on the page.
[1] https://www.eff.org/pages/list-printers-which-do-or-do-not-d...