n. 25B6; noun
they have to pay tax on the interest : DUTY, excise, customs, dues; levy, tariff, toll, impost, tithe, charge, fee.
a heavy tax on one's attention : BURDEN, load, weight, demand, strain, pressure, stress, drain, imposition.
fiscal.
rebate.
25B6; verb
they tax foreign companies more harshly : CHARGE (DUTY ON), tithe; formal mulct.
his whining taxed her patience : STRAIN, stretch, overburden, overload, encumber, push too far; overwhelm, try, wear out, exhaust, sap, drain, weary, weaken.