Houston business owner sent to prison for failing to pay over $1.6 million in taxes

HOUSTON - A former certified public accountant has been ordered to prison for failing to pay taxes withheld from employee wages, announced Acting U.S. Attorney John G.E. Marck.

Harry Lamar Curtis III pleaded guilty Nov. 6, 2025.

U.S. District Judge Sim Lake has now ordered Curtis to serve 18 months in federal prison to be immediately followed by three years of supervised release.

Curtis was the owner of Information Advisory Group LLC, a cybersecurity and IT company based in Houston. As such, he was required to withhold and pay over all employment taxes withheld from employee paychecks. These included federal income taxes, FICA taxes and employer matching amounts.

As part of his plea, Curtis admitted that despite being trained as a CPA, he failed to file any business tax returns for IAG since 2016. He improperly withheld $1,647,142 over this time period that was due to the IRS.

Curtis also admitted he had not filed any individual tax returns for himself since 2008.

He was permitted to remain on bond and voluntarily surrender to a Federal Bureau of Prisons facility to be determined in the near future.

IRS Criminal Investigation conducted the investigation. Assistant U.S. Attorney Brad Gray prosecuted the case.

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