There are various strategies that can be used by someone with a job to avoid paying estimated taxes with respect to income not subject to withholding. Some strategies include:
However, be sure that the strategies you use address not only the income tax on your contract work but also any self-employment tax that may be owed.
Certain employees, such as full-time life insurance salespersons, who may report income and deductions on Schedule C, rather than on Schedule A as miscellaneous itemized deductions.