The 32 GB model has been cut to $349 from its original $499, while the 64 GB model is down to $449 from $599. A bundle including the 32 GB version and a keyboard is now $449, down from $499, and the 64 GB model with keyboard is now $549 rather than $699.
The company has not announced any alteration of pricing for the Surface Pro.
The Verge reports that Europe and other countries are currently implementing the price cuts, while the cuts went into effect in the U.S. last week. In early May, IDC reported that sales of Surface devices were slow, with 900,000 units sold during Microsoft's first financial quarter.
During the company's Worldwide Partner Conference last week, Microsoft teased updates to the Surface over the coming year, including two new models and new colors.