Check all the boxes that this change affects: Sales, Withholding, Corporate Income/Franchise or Other.
LaTAP: to update the mailing and location addresses for your tax-specific accounts, select the tax-specific account you wish to update and use the Add or Edit links.
Taxpayer-level address: if you need to update the taxpayer-level address displayed on the LaTAP homepage, you must contact the Department directly.
Unable to update: if you are unable to update your account in LaTAP, you may submit your form to CentralReg@LA.Gov.
Name change: current legal name, current trade name, new legal name and new trade name.
| Question | Answer |
|---|---|
| Form Name | R-6450 |
| Form Length | 1 page |
| Fillable? | Yes |
| Fillable fields | 42 |
| Avg. time to fill out | 7 min |
| Edition | 4/25 |
| Where to send | Louisiana Department of Revenue, PO Box 1469, Baton Rouge, LA 70821 |
| Matches the agency's file | Yes, checked October 2, 2026 |
| Other names | R-6450, R6450, R 6450, Form R-6450, Louisiana R-6450, Business Taxes Name and Address Change Form |
| Official source | R-6450 (Rev 4/25), Louisiana Department of Revenue |
Form R 6450 isn’t the one you’re looking for?