Formula 1 is currently on an extended hiatus due to the COVID-19 coronavirus pandemic, with racing not due to start until at least mid-June.
The Canadian Grand Prix, currently slated as the first round, is likely to be postponed.
Formula 1 teams observe a two-week shutdown on an annual basis in August but in response to the pandemic this was moved to March/April, and extended by seven days.
On Tuesday it was confirmed, following a meeting of the World Motor Sport Council, that this period has been extended to 35 days, and can now also be taken in May.
The decision was taken after receiving unanimous approval by the Formula 1 Strategy Group, Formula 1 Commission and all 10 teams.
Several organisations, including McLaren and Formula 1 itself, have begun the process of furloughing staff.
The financial regulations will still be introduced for 2021 with the cost cap likely to be reduced to $150m annually as a response to the pandemic.