Robert Half International Inc. (NYSE: RHI) and Kforce Inc. (NASD: KFRC) updated fourth-quarter guidance last week following the passage of the new tax law, the Tax Cuts and Jobs Act.

Robert Half reported last week it expects a one-time noncash charge to its provision for income taxes in an estimated amount of $34 million to $38 million, or 27 cents to 31 cents per share, for the fourth quarter.

“The charge results solely from a revaluation of the company’s estimated deferred income tax net assets as of Dec. 31, 2017,” according to the filing. “The company has reviewed the other provisions in [Tax Cuts and Jobs Act], including any US tax on unrepatriated foreign earnings, and concluded that they have no material impact on the company’s net income in the fourth quarter of 2017.”

Net income per share guidance at Robert Half for the fourth quarter is now 29 cents to 39 cents per share. The company also reported its global effective tax rate at the beginning of 2018 will be in the range of 26% to 28%.

Kforce reported it expects a one-time, noncash charge in the fourth quarter because of the tax law. The charge is solely from the revaluation of the company’s net deferred income tax assets as of Dec. 31, and was not included in the company’s guidance of 41 cents to 43 cents per share. The negative impact to net income from the revaluation is estimated to be between 24 cents to 28 cents per share.

“Kforce anticipates subsequent regulations and interpretations to be released associated with [Tax Cuts and Jobs Act] that will provide additional guidance on the application of the law; however, we currently estimate that Kforce’s effective income tax rate will be in the range of 25.5% to 27.5% for 2018 compared to approximately 38.0% for 2017,” according to the filing.