The North Dakota Office of State Tax Commissioner has published the 2018 Income Tax Withholding Rates and Instructions. The withholding allowance amounts have changed to reflect changes in IRS Publication 15 (Circular E) for 2018. Likewise, the tables for the percentage method of withholding have also changed. There have been no changes to the instructions.
To read the Withholding Rates and Instructions in full, please follow the link.