When registering a brand for A2P 10DLC on Twilio, the choice between the Sole Proprietor track and the Standard brand track is one of the most consequential decisions you make before sending a single message. The Sole Proprietor track was designed for individuals and micro-businesses without a formal legal entity, and it comes with hard throughput limits that cannot be increased regardless of trust score. The Standard track applies to registered business entities of all sizes and offers throughput that scales with your trust score, making it the right choice for virtually any business that anticipates growth.
What the Sole Proprietor Track Allows
The Sole Proprietor registration track caps sending throughput at 1 message per second across all campaigns combined under that brand. Additionally, each Sole Proprietor campaign is subject to a hard daily limit of 1,000 messages, which works out to roughly 30,000 messages per month maximum if you send every single day. These limits are enforced at the carrier level and cannot be raised through enhanced vetting or any other mechanism within the Sole Proprietor framework. A business that exceeds these limits will see its excess traffic filtered at rates comparable to unregistered traffic, negating the value of registration. The Sole Proprietor track is appropriate for individual practitioners such as a solo real estate agent sending appointment reminders to a small client list, or a single-person service business with a genuinely small and stable subscriber base.
What the Standard Brand Track Offers
Standard brand registration requires a valid EIN and a registered legal business entity, but in exchange it offers throughput that scales with your campaign trust score. A trust score between 75 and 100 typically unlocks 75 to 225 messages per second depending on the carrier, compared to 1 message per second on the Sole Proprietor track. Standard brands can register multiple campaigns under a single brand registration, allowing you to separate marketing traffic from transactional traffic with independent throughput allocations. The registration fees are slightly higher, with a $40 one-time campaign vetting fee versus a lower fee for Sole Proprietor, but the capacity difference makes Standard registration cost-effective the moment your volume grows beyond a few hundred messages per day. Standard brands are also eligible for Enhanced Vetting, which can further raise trust scores and unlock additional throughput.
The EIN Requirement and How to Get One
Obtaining an EIN is the primary barrier that leads small businesses to choose the Sole Proprietor track incorrectly. In the United States, sole proprietors can apply for an EIN through the IRS website at no cost, and the number is issued immediately upon completing the online application during business hours. An EIN does not require you to incorporate or change your legal business structure; sole proprietors can have EINs and still operate as sole proprietors for all tax and legal purposes. Once you have an EIN, you should register as a Standard brand rather than a Sole Proprietor brand in almost every case, because the throughput difference is dramatic and the cost difference is minimal. Many businesses that registered as Sole Proprietors for convenience have had to go through the time-consuming process of re-registering as Standard brands after hitting the daily message limits during a campaign.
Making the Switch from Sole Proprietor to Standard
If you are currently registered as a Sole Proprietor and need to switch to a Standard brand, you cannot simply upgrade your existing registration. You must create a new brand registration as a Standard entity with your EIN, register new campaigns under that brand, assign your phone numbers to the new campaigns, and then decommission your Sole Proprietor registration. During the transition period, you may need to temporarily maintain both registrations while awaiting Standard campaign approval, which means paying registration fees for both. The process typically takes one to three weeks depending on campaign complexity and carrier review times, during which your traffic should continue under the Sole Proprietor campaigns rather than shifting to unregistered numbers. Planning this transition before you hit the daily message limit, rather than in response to a deliverability crisis, is strongly recommended.
Conclusion
Registering under the wrong A2P 10DLC track creates a throughput ceiling that no amount of optimization can overcome, and fixing it mid-campaign is disruptive to both operations and deliverability. Speak with our compliance team and we will assess your current registration and migrate you to the correct track with minimal disruption.
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