Almost two-thirds of enrollees receiving advance premium tax credit (APTC) in Marketplaces had to pay back an average of $729 of the tax credits they received in 2014, according to H&R Block, reducing these enrollees’ average tax refund by 33%. Approximately one in four enrollees with APTC received a refund, averaging $425, which represented an increase in their refunds of approximately 18%. A smaller percentage, almost 13%, of those with APTC had no repayment or refund due, meaning they estimated their 2014 income accurately. Finally, the average payment due for those who did not maintain coverage during all or a portion of the 2014 benefit year was approximately $178. A previous study by the Kaiser Family Foundation estimated, based on tracking income changes typical of the subsidy-eligible population, that taxpayers receiving APTC were about as likely to owe some repayment (50%) as receive a refund (45%), and found that the average repayment ($794) and refund ($773) were similar.