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If I pay for medical bill from my pocket instead of using HSA account, will I get tax credit for paid amount?
Yes – although it might work differently than your question suggests.
When you contribute to a Health Savings Account, that contribution reduces your taxable income, lowering your taxes. This occurs whether you spend the HSA funds that year or not.
With HSA’s, you can pay for qualified medical expenses out of pocket and reimburse yourself later. That reimbursement acts as a transfer from the HSA to your bank account, in effect paying for the previous purchase using HSA dollars. Since those HSA contributions were tax free, you are paying for the medical purchase tax free as well.
The benefit of this method is it provides an amount in your HSA that you can “reimburse” yourself at any time, and meanwhile that money can be invested and grow, also tax free. You can use a tool like TrackHSA.com to track these reimbursable amounts to justify to the IRS any transfers you make.