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I need a tax calculator that was built using php and java script updated with several features. The updated features mostly include automatically selecting a tax bracket based on the gross. The calculator may need some basic updating to the actual coding structure in addition to the updates.All tax information that needs to be added will be provided. A complete list of updates can be found below.
1. Calculator off(turns the calculations completely off and make all fields editable)
1.5 Add marital status and allowances function
2. Tax bracket update( calculates correct fed & state tax based on gross and tax charts for married,single and allowances)
3.New tax periods(ability to disconnect from the calendar and start fresh periods up to 24 new periods)
4.number rounding ( correct the number rounding to consistently function)
5. Fix monthly function
6. Add simple calculation functions to beta version
7. Copy all changes to beta version