claw back
• regain a lost advantage or position laboriously and gradually.
• "they were committed to clawing back power"
• (of a government) recover money paid out in the form of an allowance or benefit, typically by taxation.
• "the government is trying to claw back the pay rises"
clawback
noun
• an act of retrieving money already paid out, typically by taxation.
• "a clawback of tax relief"