Firstbase.io (firstbase.io) has a 4.6 out of 5 rating on OK.one, based on 60 user reviews collected here. It is listed under Legal Services & Government and its reputation is excellent. Praise is nearly unanimous, with 90% rating it 4 stars or higher; The business has replied to 100% of negative reviews. Last updated 2026-08-10.
Overall, my experience was great. The process was smooth, and my business was registered successfully. Getting my EIN was a huge moment for me. I was so happy when everything was completed.
One thing I really love is the mailbox service. I don't have to manage it separately because it's included with the registration. They set everything up for me, and I never have to think about it. That has been a big convenience.
The one feature I wish they offered is a US phone number. After registering my company, I still had to spend time looking for a separate provider. It would be amazing if they included a phone number service as an add on. I would gladly pay for it because it would make the whole experience much simpler.
I also wish the mailbox subscription was cheaper. Paying $35 per month is a bit expensive for me right now. A lower priced option would make the service much more accessible for small business owners and founders who are starting out.
Reply from Firstbase.io2026-08-04
Hi Grace,
Thank you so much for taking the time to share such a thoughtful review and for highlighting both what worked well and where you see room for improvement.
We're glad to know that your incorporation process went smoothly and that receiving your EIN was such an exciting milestone. It's also great to hear that the Mailroom service has made managing your business easier by taking one more task off your plate.
We want to further thank you for your suggestions. Feedback like this helps us continue improving our platform. We understand how valuable it would be to have a US phone number solution available as part of the overall experience, and we’ve shared the feedback with our team. While we don't currently offer this service directly, we do partner with several providers that many founders have found helpful. We do have trusted partner options available through our Rewards page, including Quo (formerly OpenPhone), CallHippo, and KrispCall. Please feel free to check these out, as well as our other reward options that could be beneficial to your business.
Thank you again for your honest feedback and for being part of the Firstbase community. We truly appreciate your support and wish you continued success with your business.
All the best,
The Firstbase Team
G
Gleb西班牙 · 1 review · Experienced 2026-07-22 ·
★★★★★
Seamless Process
The process was seamless. Everything was clearly laid out and thought of. Process of receiving EIN was clearly explained, as it might be hard for a non-US founder. Anna from support helped out big Time and recommended possibly making a call to the IRS which would get the EIN immediately rathen than waiting for 20 business Days! Thank you.
Reply from Firstbase.io2026-07-24
Hi Gleb,
Thank you for taking the time to share your experience.
We're happy to hear that the incorporation process felt seamless and that the guidance throughout the EIN application was clear and easy to follow. We know obtaining an EIN as a non-US founder can sometimes feel like one of the more challenging steps, so it's great to hear the explanations were helpful.
We'll also make sure Anna sees your kind words. She'll be delighted to know her support and recommendations were highly appreciated.
Thank you again for choosing Firstbase. All the best and continued success as your company grows.
The Firstbase Team
P
Paco De AndaMX · 1 review · Experienced 2026-07-20 ·
★★★★★
I had a great experience with Firstbase as an International Founder
I had a great experience with Firstbase. The entire process was simple, fast, and much quicker than I expected. Everything was clearly explained, which was especially valuable to me as an international founder.
I really appreciated the platform, the notifications throughout the process, and the examples provided at each step. Having a clear standard or reference to follow made everything much easier. I also had a few questions along the way, and the support team responded very quickly through the chat.
One area I would love to see Firstbase expand is more country-specific guidance for international founders. I am based in Mexico, and it would be helpful to have more clarity on which local documents, processes, or next steps Firstbase can support with, and which ones need to be handled separately.
Overall, I would absolutely recommend Firstbase. It made the incorporation process feel straightforward and manageable, and I am excited to try the rest of their products.
Reply from Firstbase.io2026-07-21
Hi Paco,
Thank you for taking the time to share such a detailed review.
We're happy to hear that your incorporation experience was simple, fast, and easy to navigate. It's especially rewarding to know that our platform, step-by-step guidance, notifications, and support team helped make the process feel straightforward as an international founder.
We also appreciate your thoughtful suggestion about providing more country-specific guidance. Feedback like yours helps us better understand where we can continue improving the experience for founders across the globe, and we'll be sure to pass it along to our team.
Thank you again for your recommendation and for trusting Firstbase with your business journey. We look forward to supporting you as your company continues to grow.
Best Regards,
The Firstbase Team
M
Mike M.西班牙 · 1 review · Experienced 2025-08-15 ·
★★★★★
Good incorporation experience
Good incorporation experience, but pricing and upselling should be more transparent
I used Firstbase to create Agestone, and the incorporation process itself was smooth and well organized. The platform is easy to use, and the initial setup was handled efficiently.
However, the total cost was not as transparent as I expected. Additional fees appeared throughout the process, and it felt like the AutoPilot program was effectively required rather than presented as a genuinely optional service. AutoPilot may be useful for some companies, but it is not necessarily the right solution for every business, especially smaller or simpler structures.
Firstbase would offer a much better experience if it clearly disclosed the full expected cost from the beginning and allowed clients to choose compliance services without pressure or bundled obligations.
Reply from Firstbase.io2026-07-20
Hi Mike,
Thank you for taking the time to share such thoughtful and balanced feedback. We're pleased to hear that your incorporation experience with Firstbase was smooth and that you found the platform easy to use.
We also sincerely appreciate your comments about pricing transparency and how our compliance services are presented. Feedback like yours is incredibly valuable, as it helps us better understand our customers' experiences and identify opportunities to improve.
Our goal is to provide founders with services that support their business needs while making it as clear as possible what options are available throughout the process. We understand that every business is different, and your perspective on flexibility and transparency has been shared with our team as we continue to refine the experience we offer.
Thank you again for choosing Firstbase and for sharing your experience. We truly appreciate your feedback and wish you every success as your business grows.
Best Regards,
The Firstbase Team
The CS is super helpful. They answered me late Sunday night to help solve my EIN problem. Thank you.
Reply from Firstbase.io2026-07-14
Hi Fareed,
Thank you so much for taking the time to share your experience.
We're delighted to hear that our Customer Success team was able to assist you with your EIN issue, even late on a Sunday night. We know how important timely support can be, especially when you're working through critical business tasks, so it's wonderful to know our team was there when you needed us.
We appreciate your kind words and your trust in Firstbase. We're always here to support you, and we wish you every success as you continue building your business.
All the best,
The Firstbase Team
Very easy and direct process. Quick response as well.
Reply from Firstbase.io2026-07-09
Hi Viralkumar,
Thank you so much for your review.
We're happy to hear that your experience was easy & straightforward and that our team was able to respond quickly whenever you needed us. We aim to make the process as smooth as possible so founders can focus on building their businesses with confidence.
Thanks again for your recommendation and for choosing Firstbase. We truly appreciate your support.
Best Regards,
The Firstbase Team
J
John Baker加拿大 · 2 reviews · Experienced 2026-07-01 ·
★★★★★
Very fast
Very fast, very efficient, good price, and great. So the customer support team is highly recommended to any other entrepreneurs and founders.
Reply from Firstbase.io2026-07-08
Hi there,
Thank you so much for your kind review.
We're thrilled to hear that you found our service fast, efficient, and of great value. It's rewarding to know that our Customer Support team made such a positive impression and earned your recommendation to fellow entrepreneurs and founders.
Thank you for placing your trust in Firstbase. We truly appreciate your support and look forward to continuing to help you as your business grows.
Wishing you every success on your entrepreneurial journey.
The Firstbase Team
E
EduardoEC · 1 review · Experienced 2026-06-27 ·
★★★★★
Good experience for managing a U.S. company from abroad
My experience with Firstbase has been positive overall. The incorporation process was smooth, and the platform has made it easier to manage several important aspects of the company in one place.
As a founder based outside the U.S., I found their guidance and support useful, especially for understanding processes that can be unfamiliar at the beginning. Communication has been clear, and I have not had any major issues with the service.
There have been some changes and additional costs over time, such as Autopilot, but I understand that these types of services can evolve and that operational costs may increase. In my case, the convenience of having support, reminders, compliance tools, and company-related services centralized in one platform has still been valuable.
Overall, Firstbase has been helpful and has made the process of starting and managing a company more straightforward.
Reply from Firstbase.io2026-06-29
Hi Eduardo,
Thank you so much for your detailed review and for sharing your experience with Firstbase.
We're delighted to hear that we've helped make starting and managing your U.S. company from abroad a smoother experience. It's rewarding to hear that our guidance, support, and centralized platform have helped simplify what can often feel like a complex process for founders building a U.S. business from abroad.
We also appreciate your honest feedback regarding the changes to our services over time. As we continue to expand and improve our platform, we work hard to ensure we're delivering meaningful value through the support, tools, and features we provide.
Thank you again for your trust and for choosing Firstbase. We truly appreciate your support.
Best Regards,
The Firstbase Team
I've been extremely satisfied with the experience I've had with using Firstbase.io! The ease of forming my LLC was incredible. I found that everything was clearly explained and you were guided step by step on what to do next. What I didn't expect was the partnership perks with AWS, Stripe, etc. Those have been and will continue to be extremely valueable for my startup in the upcoming months as we continue to get off the ground. Great job, Firstbase team!
Reply from Firstbase.io2026-06-26
Hi Connor,
Thank you so much for your kind review.
We're really happy to hear that your experience with Firstbase has been such a positive one. Making the LLC formation process as seamless and straightforward as possible is exactly what we continuously aim for, so it's great to know our step-by-step guidance made things easy for you.
We're also delighted that you're already finding value in our partner perks! We know how important it is for startups to have access to resources like AWS, Stripe, and other exclusive offers as they grow, and we're glad they're helping support your journey.
Thanks again and all the best.
The Firstbase Team
M
Marco Nanni意大利 · 1 review · Experienced 2026-06-24 ·
★★★★★
Excellent service
Great service and excellent support at Firstbase.io. On a couple of automated tasks that were left pending the team stepped in manually and resolved everything within a few hours, very professionally. Highly recommended for anyone looking to set up and run a US company without the hassle.
Reply from Firstbase.io2026-06-25
Hi Marco,
Thank you for your kind review and recommendation.
We're pleased to hear that our team was able to step in quickly and help resolve those pending tasks for you. Providing responsive support and making the process of starting and running a US company as seamless as possible is exactly what we strive for.
We appreciate your trust in Firstbase and are grateful for your feedback. Wishing you continued success with your business.
Best Regards,
The Firstbase Team
E
Erzen KXK · 1 review · Experienced 2026-05-16 ·
★★★★★
The setup was remarkably…
The setup was remarkably straightforward and expedient, and the support provided was both prompt and satisfactory.
Reply from Firstbase.io2026-06-17
Hi Erzen,
Thank you for taking the time to share your experience. We're pleased to hear that you found the setup process straightforward and efficient, and that our support team was able to provide prompt and satisfactory assistance along the way.
We appreciate your feedback and are grateful to have been part of your business journey.
Best regards,
The Firstbase Team
K
Kate Groeningen美国 · 1 review · Experienced 2026-05-21 ·
★★★★★
Rectified
Jun 17th UPDATE: Firstbase has been thorough and professional since I posted this review. My June 11th frustration was cleared up as being an internal server error because I forwarded an email from an address that didn't work to their support email and that caused their system to reject it in their pipeline or something along those lines. That was their reasoning and I'm happy to give them the benefit of the doubt.
Rafael Diniz has been professional and very helpful. They did end up giving me a free year sort out my affairs. So although the experience was frustrating, I can say they have done everything in their power to rectify it, and I want to be fair with this review.
Jun 11th UPDATE: I'm still confused about how things are done. On the back of this review response stating that they can't find my contact info. Firstbase contacted me directly on my email on the same day.
This is the same email on my account profile, the same email I have been emailing from (AND) from the same support email address that I have been emailing. So frustrated but I hope they will be able to explain.
They have offered to give me a year's subscription free, which was not what I was angling for, but I wanted to give credit where its due.
ORIGINAL POST: Beware. This company's communication is shocking.
There are a number of better options out there that I wish I had known about. They charge half the running expenses of Firstbase with double the service. Personal service and real people.
The 5 star reviews tend to be from clients who have not yet encountered issues that may arise in the normal course of staying compliant and conducting business. My issue is luckily very small.
I have sent 4 emails over the course of 17 days and there has not been one response back. I can see my emails are being opened and yet they choose not to respond.
I second what a lot of others are saying, that their costs are not transparent in far more ways than my example. I recently received an email stating that my annual plan is discontinuing and I will automatically tiered up and the price will double at the next annual renewal. That's 30 days notice, making me a captive consumer as would not be able to move my affairs in this time frame. Something I have been considering doing for the last few months as I am aware of the huge mark up on Firstbase products.
At the end of the day, its not the cost increase but that when I raised these concerns via email, they chose not to answer. I shudder to think of encountering serious issues with my representation as this company.
Whenever I read reviews from people complaining, I often give the company the benefit of the doubt and assume that the client is splitting hairs - this is not the case here. I hope this information is useful to someone.
Firstbase - don't send me a generic public response about "feeling for my frustrations" now that I've been pushed to write a bad review. Simply responded to any one of my 4 emails directly and courteously without me having to go to these lengths to get a response.
Reply from Firstbase.io2026-06-12
Hi Kate,
Thank you for sharing your feedback. We’re sorry to hear about your experience and would like the chance to look into this further.
We are unable to find your contact information. Can you please reach out to us at [email protected] with your details so we can better understand what happened and work toward a resolution.
Looking forward to hearing from you.
The Firstbase Team
J
Jackson HiszterAE · 1 review · Experienced 2026-06-05 ·
★★★★★
Clean UI, good communication & customer service
Clean UI, good communication & customer service & fast services every time we requested :)
Would have liked better overview on the accounting side & a few of the automations were not adapted to our specific liking.
Reply from Firstbase.io2026-06-05
Hi Jackson,
Thank you for taking the time to share your experience with Firstbase!
We're glad to hear you've enjoyed our platform's clean interface, responsive customer support, and fast service whenever you've needed assistance. Making the process as smooth and efficient as possible is something our team works hard to deliver.
We also appreciate your constructive feedback regarding the accounting overview and some of the automations. These insights help us improve the experience and better meet different business needs and preferences as we continue to develop our platform.
Thank you again for choosing Firstbase, and we wish you continued success with your business.
Best Regards,
The Firstbase Team
A
Anyanwu Miracle美国 · 1 review · Experienced 2026-05-28 ·
Excellent and straigh forward service. It makes the whole process extremely easy and fast. Recommended
Reply from Firstbase.io2026-06-04
Hi Michelle,
Thank you for your review and recommendation.
We're happy to hear that you found our service straightforward, efficient, and easy to use. Making the company formation process as simple and fast as possible is exactly what we strive for, so it's great to know that was your experience.
We appreciate you choosing Firstbase and wish you continued success on your entrepreneurial journey. Please reach out to us if you need any support.
Best Regards,
The Firstbase Team
Paid Firstbase $399 (Start package) on April 13, 2026 to register the LLC. It's the end of May now, more than 45 days have passed, and I'm still waiting for my EIN.
The worst part is the complete lack of support. My letters are not answered (or robotised answers come every 5 days), and my business is frozen indefinitely.
Important: I understand that the IRS can process the application up to 30 working days, but Firstbase does not give feedback and does not fulfil the promised deadlines, although the company is already registered in the state.
I demand to provide me with an EIN or initiate a refund. You haven't done your job, and I can't wait any longer, losing money and customers.
Reply from Firstbase.io2026-05-30
Hi Ahmadjon,
Thank you for taking the time to share your feedback. We're truly sorry to hear about the frustration you've experienced and understand how important it is to receive your EIN as quickly as possible when launching your business.
To help clarify the situation, our Operations team member, Allison, has reached out to you directly with additional information about your account and the steps to obtain your company's EIN.
Please know that our team is committed to supporting you throughout the process, and we'll be here to assist you every step of the way. If you have any questions or need further guidance, don't hesitate to reply to let us know. We're always happy to help.
Thank you for your patience, and we look forward to helping you get everything completed successfully.
Best regards,
The Firstbase Team
More Than a Year Later, Still No Updated EIN Certificate
My experience with Firstbase has been extremely disappointing.
Over a year ago, Firstbase changed my company's address and initiated the process to update our records. Since then, I have signed the required documents multiple times and repeatedly followed up with their team.
Despite this, they have still been unable to provide an updated EIN confirmation letter reflecting the new address. What makes the situation even more frustrating is that the address change was initiated through their service, yet they have not been able to complete the process or provide the necessary documentation.
This should be a straightforward administrative task, but it has dragged on for more than a year with no resolution. The repeated requests for paperwork, lack of ownership, and inability to deliver a basic compliance document have caused significant frustration and wasted a considerable amount of time.
I expected much better from a company that specializes in helping founders manage their businesses. Unfortunately, my experience has been the opposite.
Update: the issue was resolved in a week after the review.
Reply from Firstbase.io2026-05-30
Hi Nikhil,
Thank you for taking the time to share your experience. We're sincerely sorry for the frustration and disappointment this situation has caused.
We understand how important it is to have your company records updated in a timely manner, and we appreciate your patience while this matter is being worked through.
To address your concerns directly, Allison from our Operations team has reached out to you with additional information regarding your case and the current status of the request. We remain committed to supporting you throughout this process and will continue to provide updates as they become available.
Thank you again for your feedback. Please know that our team is here to assist you every step of the way, and we're dedicated to helping bring this matter to a resolution.
Best Regards,
The Firstbase Team
J
Jacques FreitasBR · 1 review · Experienced 2026-05-26 ·
★★★★★
The service is great
The service is great, easy to use and the support team is there to help. I am opening my company with them and, up to now, I had no issues.
Reply from Firstbase.io2026-05-28
Hi Jacques,
Thank you so much for your kind review. We’re happy to hear that you’ve found the service easy to use and that our support team has been helpful throughout your company formation journey.
It’s great to know everything has been running smoothly for you so far, and we truly appreciate you choosing Firstbase to help you get started. If you ever need assistance along the way, our team is always here to help.
Thanks again, and all the best.
The Firstbase Team
R
RonaldVG · 6 reviews · Experienced 2026-05-12 ·
★★★★★
Smooth process from incorporation to…
Smooth process from incorporation to EIN and setting up mailbox. I’m on to the next step of setting up the US bank account. I’ll probably choose the accounting package but we will see. So far smooth and works well
Reply from Firstbase.io2026-05-20
Hi Ronald,
Thank you for sharing your experience. We’re so glad to hear that the process has been smooth for you from incorporation through obtaining your EIN and setting up your mailbox. It’s also great to know the platform has been working well as you move through each step of building your business.
Exciting times ahead with your US bank account setup, and we’re happy to hear you’re considering our accounting package as well.
We appreciate your trust in Firstbase. Let us know if you need any advice or assistance as you consider our products and services. We're always happy to help.
Best regards,
The Firstbase Team
W
Will Cranney美国 · 1 review · Experienced 2026-05-19 ·
★★★★★
My experience with Firstbase has been…
My experience with Firstbase has been fantastic. The process of setting up my LLC was very quick since their mailbox and agent services all live in one place. The dashboard is very easy to use and acts as central hub anytime I need to access my company documents or remember what my company address is.
Reply from Firstbase.io2026-05-19
Hi Will,
Thank you so much for your review. We’re thrilled to hear that your experience with Firstbase has been fantastic and that the LLC setup process felt quick and seamless for you.
It’s great to know that having your mailbox, registered agent services, and company documents all in one place has made managing your business more convenient. We designed the dashboard to serve as a simple, reliable central hub for founders, so your feedback means a lot to our team.
We truly appreciate your support and recommendation, and we’re excited to continue supporting your business journey.
Best regards,
The Firstbase Team
