Having run as a successful promotional event last year, the Baltic country has struck a deal to run the first WRC event since Rally Mexico in March following the coronavirus pandemic.
The event organisers' agreement with WRC bosses and the FIA is part of a deal that is believed to be in the region of two million Euros for the high-speed gravel event.
Following the opening three rounds of 2020, reigning champion Tanak is fifth in the standings, 24 points behind current leader and six-time champion Sebastien Ogier.
Ott Tänak, Hyundai Motorsport
McKlein / Motorsport Images
Tanak, who scored his first rally win as a Hyundai driver earlier this month in the Viru Rally, is adamant he can still retain his WRC crown despite his deficit to Ogier.
"The Monte accident and zero points at the start of the season was never the plan, but two second place finishes [since then] means it is not a bad start," he said. "I am confident that everything is still possible."
Hyundai has announced its driver line-up for Estonia will comprise Tanak, Thierry Neuville and Craig Breen, who will be making his second start of the year after Rally Sweden.
Breen was supposed to drive the third works i20 Coupe WRC in Rally Finland before the event became one of several to be cancelled amid the COVID-19 crisis.