The FCC has been directed by Congress to free up 800 MHz of mid-range spectrum that will then be auctioned off to commercial users. One of the important steps to repurpose spectrum is that existing users of spectrum must be relocated to other spectrum bands before the auction winner can use the spectrum.

Two decades ago, Congress formalized some of the spectrum relocation process with the Commercial Spectrum Enhancement Act (CSEA), which created the Spectrum Relocation Fund (SRF). This fund was created to pay for the cost of federal agencies that have to change to using a different spectrum band if the spectrum they had been using is sold in an auction. By statute, any auction of federal spectrum must raise at least 110% of the estimated relocation costs for the federal incumbent, ensuring the move does not cost taxpayers. The SRF fund covers the cost of planning, research and development, and hardware upgrades needed to change to a different spectrum. The process of a federal agency having to relocate its spectrum use is handled by the NTIA.

Any commercial customers that are disadvantaged by a spectrum move must coordinate with the FCC to be compensated for changing to a different spectrum. The FCC also hopes to cover these costs through auction proceeds. A good example of this in action was the 2016 incentive auction, where almost 1,000 television stations moved to a new over-the-air channel to free up spectrum for cellular purposes. Anybody bidding on this spectrum understood that the price they needed to pay had to be high enough to compensate television stations that were being displaced.

There have been a number of spectrum auctions that were profitable for the FCC and that raised a lot of money over and above the relocation costs. But not all spectrum auctions have gone as planned. For example, the 2012 Spectrum Act required the FCC to auction the T-Band spectrum (470-512 MHz). This spectrum was widely used by first responders and public safety, and it was determined by the GAO, after a lot of complaints from public safety agencies, that the cost to relocate the existing users was going to exceed $5.9 billion, which was more than what the auction was expected to raise. Congress eventually repealed the requirement for the auction.

There are a few auctions where the actual relocation costs were higher than had been estimated. In the AWS spectrum (1710-1755 MHz) auction in 2013, the actual federal relocation costs were $474 million higher than anticipated.

There are other spectrum auctions where it has taken the incumbents a lot longer to vacate the spectrum than expected, making the spectrum unusable for the new buyer. A good example is the 2016 incentive auction, when it took some television stations a long time to make the transition to a new spectrum band.

The relocation issue is relevant today due to the upcoming efforts that will be required by the FCC to auction 800 MHz of spectrum, including 200 MHz this year. These auctions were ordered by the One Big Beautiful Bill with the expectations that the auctions would raise $60 billion for the U.S. Treasury. However, that revenue number ignored the impact of paying existing users of spectrum to relocate. It’s impossible to know what relocation might cost since the specific spectrum bands haven’t yet been identified. But most of the mid-range spectrum bands are already heavily used by military, government, and commercial users. It seems likely that the net gain from the auctions could be less than $60 billion expectation