The Debt Office plans to buy back up to 5 billion crowns ($755.7 million) in the 2020 linker, which has a coupon of 4 percent, in exchange for the new 0.25 percent, 2022 debt.
The purpose is to build up volume in the 2022 issue.
Results of the auction will be published at 0910 GMT.
Copyright Reuters, 2011