"Clawback" refers to the process of taking back or retrieving something, typically money or benefits, that had been previously given or earned. It often occurs when there was a mistake, misconduct, or violation of certain conditions. Full definition
In your retirement, TFSA withdrawals will have the advantage of not counting towards as income in terms of clawback of Old Age Security which in 2016 started at about $ 76,000 in income. (business.financialpost.com)
So the OAS clawback threshold of $ 72,809 minus your CPP and OAS income of $ 19,955 is $ 52,854. (highinterestsavings.ca)
The progressive nature of the tax system means that those higher income levels result in much higher taxes and can result in clawbacks of OAS and other seniors» benefits. (moneysense.ca)