Possible Clues:

• One is up to one's neck resolving car tax
• Councillor is given a large container for neckwear
• Neckwear article and stuff, mostly with tax added
• Ascot kin
• Fancy item of neckwear
• Necktie? Almost all of stuff has tax added
• Formal neckerchief
• Accessory for many an artist attracts tax
• A load of wine on credit, which is necked?
• A tax credit having priority for some menswear?