1. to tax too heavily; to impose excessive taxes on
2. to put too great a strain or burden on; to overwork or exhaust

Examples

• The government overtaxes small businesses with excessive regulations.
• High property taxes overtax homeowners in this district.
• The heavy workload overtaxes the employees during busy season.
• Don’t overtax yourself by taking on too many projects at once.
• The old bridge overtaxes under the weight of modern traffic.
• The new policy overtaxes wealthy individuals at a 45% rate.
• Studying for five exams simultaneously overtaxes most students.