Carte Platform — Finally, the system learned our language.

— The Signature Moment —

11:43 PM.
Two years. Four months.

January 2024, 11:43 PM. A KakaoTalk message arrived. A 22-year Korean-American CPA in Atlanta could not answer it as a CPA — only as a system. For two years, he carried the architecture in his head.

Then in January 2026, in the heart of the busiest tax season — when every CPA in America is buried — he could no longer wait. Four months later — through tax season — 115,262 lines. 23 patent-eligible features. 11 platforms. 11 languages.

— The Suite —

One platform.
Two tiers. Six pillars.

Built for both — the owners who run the business, and the accountants who close their books.

— Tier I · For Owners —

가

TaxCarte

Tax learned our language.

Tax filing for non-native English speakers — guided by SASOO™, the senior who follows you through every form. IRS notices translated. Returns prepared in your language. CPA review when you need it.

가

BookCarte

Bookkeeping learned our language.

Real-time bookkeeping the owner — not just the accountant — can read. SASOO™ explains every entry in your language. Shared visibility. No more "what does this mean?" calls.

가

PayrollCarte

Payroll learned our language.

Payroll the owner runs themselves — not the accountant on Friday night. SASOO™ walks you through every check. Multi-state, multi-language, full ACH compliance.

— Tier II · For Accountants —

가

TaxCarte Pro

Tax learned our language.

— for the firm —

For CPA firms. Multi-client management. Batch e-filing via IRS MeF. Glass Frame CURS interface. SASOO™ Pro-tier AI — Circular 230 compliant.

가

BookCarte Pro

Bookkeeping learned our language.

— for the firm —

For CPA firms. Multi-client tabs. Today's task panel. Industry-pattern COA generation. Cross-client benchmark analytics.

가

PayrollCarte Pro

Payroll learned our language.

— for the firm —

For CPA firms. Batch ACH via Plaid. Form 941/940 batch e-file. Multi-client direct deposit. ACA compliance + WH-347 prevailing wage.

Beta launching 2026. Pricing on request — kevin.yoon@carteplatforms.com

— The AI —

Meet SASOO.

The one AI partner who follows you across every Carte platform.

사수 (sah-soo) — Korean for "the senior who guides you." In Carte, SASOO is the AI assistant that travels with you: through tax forms, through bookkeeping entries, through payroll runs. One name. One voice. Eleven languages. Six platforms. Two tiers — owner or accountant — same partner.

— 01 —

Follows you, not the platform.

Same SASOO answers your tax question, your bookkeeping question, your payroll question. The context travels with you across all 6 platforms — owner-tier or Pro-tier.

— 02 —

Speaks your language.

11 languages, dynamically. Ask in Korean, get an answer in Korean. Ask in Spanish, get Spanish. SASOO matches the user, not the codebase.

— 03 —

Never lies about sources.

Every answer cites IRC, GAAP, or your firm's KB. Click the citation, jump to the source. Patent-pending closed-loop architecture (SASOO-P001 / P002 / P003).

One name. Two tiers — server-enforced.

— SASOO · Owner Tier —

For the people who run the business.

Informational. Never advises. Says "I cannot answer that — let me escalate to your CPA." Bound by never-advise guardrails. Used in TaxCarte, BookCarte, PayrollCarte.

— SASOO · Pro Tier —

For credentialed CPAs.

Advisory. Circular 230 compliant. Citation grounded — IRC, GAAP, IFRS, Payroll regs. Cross-Platform NL Propagation. Used in all Pro platforms + Pro Hub.

— The Audience —

Built for the
underserved.

67M

non-native English speakers in America

33.2M

small business owners in the U.S.

11

languages — full feature parity, not just UI translation

— The Team —

Built by people who
live with the problem.

Ki Bong (Kevin) Yoon

Founder & Chief Executive Officer

22-year Georgia-licensed CPA. Principal CPA at Wooree Accounting & Tax, Inc. since 2010. Carried the architecture in his head from January 2024; built all 115,262 lines in four months — January through April 2026 — through tax season. The 22-year practice that revealed the problem also produced the system.

22-year practicing CPA
Sole engineer of 115,262 lines
Wooree Accounting & Tax, Inc.

Daero Chung

Co-Founder & Chief Operating Officer

전문 경영인 · Professional Executive Manager. 25+ years of executive experience in Fortune Global 500 companies. Former General Manager of Business Planning, HR, and Administrative Operations Division. Brings the operational discipline of large-enterprise leadership to Carte's pre-seed-to-Seed transition. Owner-first operating philosophy: every product decision begins with the owner who runs the business, not the accountant who closes the books.

Co-Founder & COO
25+ Years · Fortune Global 500
GM · Business Planning · HR · Ops

— Contact —

Beta access. Investor inquiries.
Partnership conversations.

Reach out. We read every message.

Founder · CEO

kevin.yoon@carteplatforms.com

Co-Founder · COO

daero.chung@carteplatforms.com

Office

678-549-3350

Address

1325 Satellite Blvd, Ste 1204
Suwanee, GA 30024

Finally, the system learnedour language.

11:43 PM.Two years. Four months.

One platform. Two tiers. Six pillars.

Meet SASOO.

Follows you, not the platform.

Speaks your language.

Never lies about sources.

For the people who run the business.

For credentialed CPAs.

Built for the underserved.

Built by people who live with the problem.

Beta access. Investor inquiries. Partnership conversations.

Finally,
the system learned
our language.

11:43 PM.
Two years. Four months.

One platform.
Two tiers. Six pillars.

Built for the
underserved.

Built by people who
live with the problem.

Beta access. Investor inquiries.
Partnership conversations.