A new review by Parliament’s spending watchdog says waiving mandatory withdrawal amounts from seniors’ retirement savings would cost federal coffers about $1 billion annually.

Each year, seniors with registered retirement income funds (RRIFs) have to withdraw a minimum amount from their savings, which is considered taxable income.

The Liberals shifted the marker this year, dropping the minimum for each senior by 25% to ease concerns raised by the effect of the Covid-19 pandemic.

That let those who could afford it leave more money in their tax-sheltered investments, hoping to recoup losses from the pounding the pandemic delivered to the markets.

The parliamentary budget office says cutting the minimum withdrawal all the way to zero would end up costing the federal treasury $940 million next year, rising each year until hitting just over $1 billion in 2025.

The budget officer’s report also says the cost would decrease over time for individuals as they age.

Seniors groups had pressed the Liberals earlier this year to waive the minimum withdrawal limit owing to the effect Covid-19 was having on financial markets and retirement savings.

At the time, Seniors Minister Deb Schulte said the government would watch financial markets before making any decisions, since most seniors don’t need to make RRIF withdrawals until the end of the year.

Figures the PBO provided for the most recent year available, 2018, show that nearly 2.1 million taxpayers had RRIFs, with an average amount of $114,019.

The average withdrawal that year was $10,645, and 41% of fund holders withdrew above the minimum limit.

The government has been urging low-income seniors to file their tax returns soon to avoid having benefits cut off Jan. 1. The deadline federal officials have set to receive and have processed seniors’ income information is Nov. 29.

The information determines eligibility for and the value of payments like the guaranteed income supplement, which goes to low-income seniors.

Without it, seniors receiving the income top-up will find the payment taps closed.

Affected seniors were to receive notices from Service Canada, which also planned to call as many as 45,000 seniors this fall.

Payments to vulnerable Canadians, such as seniors, as a result of the pandemic have skyrocketed.

A recent government-commissioned report noted there may be as many as 100 million more payments this fiscal year because of Covid-19, one-third of which would be by cheque.

Recent enrolment in direct deposit — which the government promotes as a faster way to receive benefits, but also reduces costs of printing and mailing cheques — has mostly been for those receiving emergency aid or employment insurance.

The public opinion research report noted that about 3% of respondents who recently signed up for direct deposit were receiving seniors benefits.