NaasflowResources
Free tools

Tools and calculators for United States.

Free salary, tax, and statutory calculators. No signup. Updated as the rules in United States change.

0 live · 3 on the way

Coming soon

US paycheck calculator

Federal withholding, FICA, and per-state income tax applied to a gross paycheck.

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Coming soon

Hourly to salary converter

Convert an hourly rate into a yearly equivalent across common work-week patterns.

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Coming soon

1099 quarterly tax estimator

Rough quarterly self-employment tax estimate for US contractors.

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Why these tools are free

The slabs are public. The maths shouldn't be a secret.

Every tool on this page runs the same calculation Naasflow uses inside the product. We open-source the maths because every payroll team should be able to double-check a number — whether they're a customer or not.

No signup, no email gate, no “unlock the result” drip. Type a number, get the answer, walk away if you want to. If you ever want the rest of the platform, the demo is one click below.

Need a different market?

Switch country at the top of the page.

Each country has its own tax engine and statutory calculators. Switch the country picker in the header to see what's live for that market.

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