The Swiss parliament has passed legislation allowing more scrutiny of bank accounts held by sports organisations and their officials.
The change in the law means they could look into the bank accounts of officials like FIFA president Sepp Blatter.
The legislation - which will come into force in April - could also affect the International Olympic Committee, the International Cycling Union and other sports governing bodies based in Switzerland
Swiss MP Roland Buechel - a leading critic of the way FIFA has handled corruption - says the law also applies to executive committee members and employees of sports federations.
Buechel added that it would allow greater scrutiny of "any strange movement" in bank accounts and financial assets held in Switzerland.
Meanwhile, FIFA will vote next week over whether or not to publish the full Garcia Report into alleged corruption in the bidding for the 2018 and 2022 World Cups.
Only a 42-page summary of the investigation by American lawyer Michael Garcia has been released - and Garcia has challenged the conclusions and some of the facts.
FIFA had insisted releasing the full report would not be possible for legal reasons but under a proposed amendment to its ethics code, an edited version could be released, which would still protect the identity of witnesses.