# Portunus > Portunus is a self-serve SaaS platform that helps entrepreneurs and immigration attorneys prepare U.S. visa applications — including E-2 treaty investor, O-1 extraordinary ability, EB-2 NIW, L-1 intracompany transferee, E-3, and EB-5 visas. The blog below is our primary content hub for visa guidance, requirements, business plans, and country-specific application processes. All blog posts below are also available as plain-markdown mirrors at `/blog/{slug}.md`. A concatenated corpus of every post is available at `/llms-full.txt`. ## Key product pages - [E-2 Visa Application](https://www.portunusai.com/e2-visa-application): product overview for the E-2 treaty investor visa workflow. - [O-1 Visa](https://www.portunusai.com/o1-visa): product overview for the O-1 extraordinary ability visa workflow. - [EB-2 NIW Visa](https://www.portunusai.com/eb2-niw-visa): product overview for the EB-2 National Interest Waiver green card workflow. - [Check Eligibility](https://www.portunusai.com/check-eligibility): free E-2 eligibility assessment. - [Pricing](https://www.portunusai.com/pricing): current plans and pricing. - [Immigration Attorneys](https://www.portunusai.com/immigration-attorneys): attorney portal / white-label offering. - [About](https://www.portunusai.com/about): company background. ## Reference - [U.S. Visa Glossary](https://www.portunusai.com/blog/glossary): definitions of 20+ immigration terms wrapped in DefinedTermSet schema. - [E-2 Visa by Country hub](https://www.portunusai.com/e2-visa): every treaty country and U.S. consular post processing E-2 applications, with per-country llms.txt summaries at `/e2-visa/{country}/llms.txt`. ## Blog posts - [E2 Visa Application Guide for UK Citizens | 2025](https://www.portunusai.com/blog/e2-visa-application-uk-guide): Complete E2 visa application guide for UK citizens. Learn requirements, processing times, investment amounts, and step-by-step application process. - Markdown: https://www.portunusai.com/blog/e2-visa-application-uk-guide.md - [E2 Visa Business For Sale: Complete 2025 Buyer's Guide](https://www.portunusai.com/blog/e2-visa-business-for-sale): Find E2 visa businesses for sale in Florida, Texas & more. Complete guide to buying qualifying businesses, costs, requirements & step-by-step process. - Markdown: https://www.portunusai.com/blog/e2-visa-business-for-sale.md - [E-2 Visa Business Plan: Complete Guide to Getting Approved | Portunus](https://www.portunusai.com/blog/e2-visa-business-plan): Learn exactly what consular officers look for in E-2 visa business plans. Covers marginality test, source of funds, financial projections, and common mistakes to avoid. - Markdown: https://www.portunusai.com/blog/e2-visa-business-plan.md - [E2 Visa Countries List 2025: All 80+ Treaty Nations](https://www.portunusai.com/blog/e2-visa-countries): Complete list of E2 visa countries for 2025. Discover which nations qualify for the E-2 treaty investor visa, eligibility requirements, and application process. - Markdown: https://www.portunusai.com/blog/e2-visa-countries.md - [E2 Visa Franchise: The Complete UK Guide to US Franchise Investment](https://www.portunusai.com/blog/e2-visa-franchise): Discover the best E2 visa franchise opportunities for UK citizens. Learn costs, requirements, and top franchises to qualify for your US investor visa. - Markdown: https://www.portunusai.com/blog/e2-visa-franchise.md - [E2 Visa Complete Guide: Requirements, Application & Investment for 2025](https://www.portunusai.com/blog/e2-visa-guide): Comprehensive E2 visa guide covering requirements, application process, investment amounts, processing times, and UK citizen specifics. Updated for 2025. - Markdown: https://www.portunusai.com/blog/e2-visa-guide.md - [E2 Visa Minimum Investment: Complete 2025 Guide | Portunus](https://www.portunusai.com/blog/e2-visa-minimum-investment): Comprehensive guide to E2 visa minimum investment requirements, including investment ranges, eligible countries, application process, and common mistakes to avoid. - Markdown: https://www.portunusai.com/blog/e2-visa-minimum-investment.md - [E2 Visa Processing Time Guide 2025 | Timeline & Tips](https://www.portunusai.com/blog/e2-visa-processing-time): Complete guide to E2 visa processing times in 2025. Learn standard timelines, premium processing options, renewal times, and how to expedite your application. - Markdown: https://www.portunusai.com/blog/e2-visa-processing-time.md - [E2 Visa Requirements 2025: Complete Guide & Checklist | Portunus](https://www.portunusai.com/blog/e2-visa-requirements-guide): Complete guide to E2 visa requirements including investment amounts, eligible countries, processing time, and application steps. Updated for 2025. - Markdown: https://www.portunusai.com/blog/e2-visa-requirements-guide.md - [E3 Visa Australia: The Complete Guide for 2025 | Portunus](https://www.portunusai.com/blog/e3-visa-australia-guide): Everything Australians need to know about the E3 visa for USA. Requirements, costs, processing times, jobs, and how to apply. Updated for 2025. - Markdown: https://www.portunusai.com/blog/e3-visa-australia-guide.md - [EB1 Visa Requirements 2025: Complete Guide for UK Citizens | Portunus](https://www.portunusai.com/blog/eb1-visa-requirements): Learn EB1 visa requirements for UK citizens. Covers EB1A, EB1B & EB1C eligibility, costs, processing times & application steps for US green card. - Markdown: https://www.portunusai.com/blog/eb1-visa-requirements.md - [EB2 NIW Requirements: Complete 2025 Eligibility Guide](https://www.portunusai.com/blog/eb2-niw-requirements): Learn the EB2 NIW requirements including the three-prong test, eligibility criteria, processing times, approval rates, and costs. Complete 2025 guide. - Markdown: https://www.portunusai.com/blog/eb2-niw-requirements.md - [EB2 NIW Visa: Requirements, Processing Time & Guide 2025 | Portunus](https://www.portunusai.com/blog/eb2-niw-visa-guide): Complete EB2 NIW guide covering visa requirements, processing times, approval rates, fees, and step-by-step application process for the National Interest Waiver. - Markdown: https://www.portunusai.com/blog/eb2-niw-visa-guide.md - [EB-5 Visa Guide 2025: Requirements, Costs & Timeline](https://www.portunusai.com/blog/eb5-visa-guide): Complete EB-5 visa guide: investment requirements, costs, timeline & steps. $800K-$1M investment path to US residency. - Markdown: https://www.portunusai.com/blog/eb5-visa-guide.md - [L1 Visa UK Guide: Requirements, Costs & Process 2025 | Portunus](https://www.portunusai.com/blog/l1-visa-guide): Complete L1 visa guide for UK applicants. Learn L1A and L1B requirements, costs, processing times, and the pathway to a US green card. Updated for 2025. - Markdown: https://www.portunusai.com/blog/l1-visa-guide.md - [L1 Visa Requirements: Complete UK Guide 2025 | Portunus](https://www.portunusai.com/blog/l1-visa-requirements): Learn the L1 visa requirements for UK employees. Covers L1A and L1B eligibility, documents needed, costs, processing times and green card pathway. - Markdown: https://www.portunusai.com/blog/l1-visa-requirements.md - [L2 Visa USA: Complete Guide for L1 Dependents 2025 | Portunus](https://www.portunusai.com/blog/l2-visa-usa-guide): Complete L2 visa guide for L1 dependent spouses and children. Learn eligibility requirements, EAD work authorisation, processing times, and application steps. - Markdown: https://www.portunusai.com/blog/l2-visa-usa-guide.md - [Moving to USA from UK: Complete 2025 Guide & Requirements](https://www.portunusai.com/blog/moving-to-usa-from-uk-complete-guide): Complete guide to moving from UK to USA in 2025. Learn about E-1/E-2 visas, work permits, costs, and step-by-step process for British citizens. - Markdown: https://www.portunusai.com/blog/moving-to-usa-from-uk-complete-guide.md - [O1 Visa Cost UK 2025: Full Fee Breakdown & Lawyer Fees](https://www.portunusai.com/blog/o1-visa-cost): Discover the true O1 visa cost for UK applicants in 2025. Complete breakdown of USCIS fees, lawyer costs, premium processing and hidden expenses. - Markdown: https://www.portunusai.com/blog/o1-visa-cost.md - [O1 Visa: Complete UK Guide to the US Extraordinary Ability Visa | Portunus](https://www.portunusai.com/blog/o1-visa-guide): Complete O1 visa guide for UK applicants. Learn extraordinary ability requirements, costs, processing times, and how to apply for the US O-1 work visa. - Markdown: https://www.portunusai.com/blog/o1-visa-guide.md - [O1 Visa Requirements 2025: Complete Eligibility Guide](https://www.portunusai.com/blog/o1-visa-requirements): Learn the O1 visa requirements for 2025, including eligibility criteria, application process, costs, processing times, and pathway to green card. - Markdown: https://www.portunusai.com/blog/o1-visa-requirements.md - [UAE Golden Visa 2025: Requirements, Costs & How to Apply](https://www.portunusai.com/blog/uae-golden-visa): Complete guide to the UAE Golden Visa. Learn eligibility requirements, costs from AED 2M, benefits, and step-by-step application process for 5 & 10-year visas. - Markdown: https://www.portunusai.com/blog/uae-golden-visa.md - [US Business Visa from UK: B1/B2 Requirements Guide 2025 | Portunus](https://www.portunusai.com/blog/us-business-visa-uk-guide): Complete guide to US business visas for UK citizens. Learn B1/B2 visa requirements, costs, application process, and processing times for 2025. - Markdown: https://www.portunusai.com/blog/us-business-visa-uk-guide.md - [US Immigration Lawyer: Complete Guide for UK Residents | Portunus](https://www.portunusai.com/blog/us-immigration-lawyer): Find the right US immigration lawyer in the UK. Compare costs, services, and get expert advice on US visas, green cards, and citizenship from London-based attorneys. - Markdown: https://www.portunusai.com/blog/us-immigration-lawyer.md - [US Visa UK Guide 2025: Apply, Costs & Requirements | Portunus](https://www.portunusai.com/blog/us-visa-uk-guide): US visa guide for UK citizens: ESTA, B1/B-2 visas, appointments, costs, requirements & processing times explained. - Markdown: https://www.portunusai.com/blog/us-visa-uk-guide.md ## Optional - [Sitemap](https://www.portunusai.com/sitemap.xml): full XML sitemap of every indexable page. - [Full corpus](https://www.portunusai.com/llms-full.txt): concatenated markdown of every blog post.