marginal rate
noun[C]
ukus(alsomarginal tax rate);(marginal rate of tax)ACCOUNTING,TAX
therateoftaxpaidon the lastpartof a person's or organization'sincomein aparticularperiod:
Thelawwould haveloweredthetopmarginalrateonincomeearnedin thecity.
Thehighermarginaltaxrateappliestoindividualswith more than $120,000 ofnetincome.
For mostpeople,theirmarginalrateoftaxwill behigherwheninvestingandlowerwhenretired.