Form 424 changes a Texas certificate of formation. The state fee is $150 for a for-profit entity and $25 for a nonprofit/co-op. TBOC ch. 3 & § 101.356 apply. File through SOSPortal or by mail; card payments add a convenience fee.
Official source: Texas Secretary of StateLast reviewed: October 30, 2026
Corp USA is not a law firm and does not provide legal advice. Private information and filing service; not a government agency.
Start with the right question.
Which article changes?
Choose add, alter or delete for each article and write its full new text.
Official source: Texas Secretary of StateWho approves?
All LLC members unless the company agreement says otherwise (TBOC § 101.356(d)).
Official source: Texas Secretary of StateWhen does it take effect?
Choose immediate effect, a later date or a future event; do not backdate.
Official source: Texas Secretary of StateYour preparation checklist
- Enter the entity name and SOS file number.
- Identify each article to add, alter or delete.
- Write each altered article in full as it will read after the amendment.
- Record the required approval and complete the statement of approval.
- Choose an immediate, later-date or future-event effective date.
- Have the authorized signer complete the filing; do not sign statements known to be false (Penal Code § 37.10).
- Submit on SOSPortal or mail to P.O. Box 13697, Austin, TX 78711-3697; delivery address: 400 W. 15th St., Austin.
Common trap: Writing only the changed words. Each altered article should be restated in full as it will read after the amendment.
Common trap: Using 424 for an agent change: use Form 401.
Common trap: Changing the name at the SOS but not at the Comptroller, bank and county DBA filings.Official source: Texas Secretary of State
Texas Form 424 Certificate of Amendment checklist
Texas Form 424 Certificate of Amendment checklist
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Keep the requirements separate.
| Change | Form |
|---|---|
| Legal name | 424 |
| Purpose / adding professional service (LLC→PLLC) | 424 |
| Managers ↔ members governance in certificate | 424 |
| Registered agent or registered office | 401 (not 424) |
| A trade name | 503 ($25) |
| Rewrite everything at once | 414/415 restated certificate ($300) |
| Ownership percentages | Usually company agreement only, unless the certificate lists them |
Carry the decision forward.
Before your next step
$150 for a Texas for-profit entity, $25 for a nonprofit/co-op. Card payments add a convenience fee.
Official source: Texas Secretary of StateYes, through SOSPortal.
Official source: Texas Secretary of StateThe authorized signer completes the filing after the required approval. For LLC amendments, all members approve unless the company agreement says otherwise.
Official source: Texas Secretary of StateNo turnaround estimate is provided here. Use SOSPortal for filing information.
Official source: Texas Secretary of StateForm 401 changes the registered agent or office; Form 424 amends the certificate of formation.
Official source: Texas Secretary of StateNo. A delayed effective date is only forward.
Official source: Texas Secretary of StateSources
Last reviewed: October 30, 2026
Corp USA is not a law firm and does not provide legal advice. Private filing service; not a government agency.