Obamacare exchanges are failing to provide adequate enrollment information to the IRS for the payment and verification of tax credits, according to a new report released by the Treasury Inspector General for Tax Administration (TIGTA).

In order for the IRS to properly administer Obamacare, exchanges are required to provide monthly enrollment data, known as “Exchange Periodic Data.” As part of the law, Obamacare enrollees may elect to have their estimated tax credit sent directly to their insurance provider as partial payment for monthly premiums. But because this is only an estimate based on expected income, the IRS relies on Exchange Periodic Data to ensure that individuals have received the proper tax credit, or if they were eligible at all.