# U.S. Tax identifier types
**URL:** https://discuss.tryton.org/t/u-s-tax-identifier-types/1447
**Category:** User
**Tags:** accounting
**Created:** [June 7, 2019, 2:15pm UTC](https://discuss.tryton.org/t/u-s-tax-identifier-types/1447 "2019-06-07T14:15:59Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@pkuriakose](https://discuss.tryton.org/u/pkuriakose)
#### Post date: [June 7, 2019, 2:15pm UTC](https://discuss.tryton.org/t/u-s-tax-identifier-types/1447/1 "2019-06-07T14:15:59Z")
Hello,
Is it possible to add US tax identifier types such as Social Security Number, Federal Tax ID’s and State tax/license ID’s?
If so, how do I go about doing that?
Thanks,
Paul
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### Author:  [@edbo](https://discuss.tryton.org/u/edbo)
#### Post date: [June 7, 2019, 2:30pm UTC](https://discuss.tryton.org/t/u-s-tax-identifier-types/1447/2 "2019-06-07T14:30:58Z")
Have you checked version 5.2? There are a lot of items from the [python-stdnum](https://github.com/arthurdejong/python-stdnum) packages added in version 5.2. So it seems that they are already there. Check it out on the [demo5.2.tryton.org](http://demo5.2.tryton.org). Go to a party and add a new identifier.
If you want to stay on another version, you have to create your own module, which extends the list with the items you want. Just take a look at the source in party module.
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### Author:  [@pkuriakose](https://discuss.tryton.org/u/pkuriakose)
#### Post date: [June 7, 2019, 2:39pm UTC](https://discuss.tryton.org/t/u-s-tax-identifier-types/1447/3 "2019-06-07T14:39:35Z")
Thank you! I guess I will be doing the upgrade this evening.