Side Income Tax Calculator for New Jersey

Side income in New Jersey is subject to federal income tax at your marginal rate, self-employment tax if applicable, and up to 10.75% New Jersey state income tax. Because side income typically stacks on top of your W-2 salary, it is often taxed at your highest marginal rates. The combined marginal rate on side income can easily exceed 40% for mid-to-high earners. This calculator breaks down exactly what you keep from each dollar of side income in New Jersey.

New Jersey uses a graduated income tax with brackets ranging from 1.4-10.75%. Lower income is taxed at lower rates, with the 10.75% top rate applying only to income in the highest bracket. This progressive structure means your effective state tax rate is always lower than the top marginal rate. New Jersey does not have local income taxes, so the state graduated rate is the total state-level income tax burden.

The table below shows what you actually keep at five salary levels in New Jersey, accounting for federal tax, FICA, and New Jersey's graduated (1.4-10.75%) state tax.

See how New Jersey compares to other Northeast states. Each link takes you to the side income tax calculator landing page for that state.

For a comprehensive breakdown of New Jersey’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full New Jersey take-home pay page.