US Market Entry Guides

Practical guides for entering the US market

Kwest's own notes for Korean companies preparing to expand into the US. Need more detailed consulting? Reach out anytime.

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Data and infrastructure behind US market entry
Trademark & Legal

Miss Your 5-Year Declaration of Use, and Your Trademark Registration Gets Cancelled

The deadline and requirements for the USPTO Section 8 Declaration of Use filing required between years 5-6 of a trademark registration, and what happens if you miss it.

Last updated: August 28, 2026 Read more
Amazon Selling & Advertising

Why Sellers Who Rely on AI-Driven Automation Apps Often Fail to Scale

Four traps that show up when Amazon sellers over-rely on AI tools like repricers and PPC automation during the scaling phase.

Last updated: August 28, 2026 Read more
US Retail Distribution

How K-Food Actually Gets Into US Grocery Channels

The three-stage path K-food brands typically follow — from Korean markets like H Mart to mainstream retailers like Costco and Kroger.

Last updated: August 28, 2026 Read more
US Retail Distribution

How Does K-Beauty Actually Get Into US Specialty Beauty Chains?

The difference between a traditional in-store launch and an online marketplace entry at chains like Sephora and Ulta, and the practical strategy K-beauty brands use.

Last updated: August 28, 2026 Read more
Business Formation

LLC, C-Corp, or S-Corp? Comparing US Entity Types for Korean Founders

A comparison of LLC, C-Corp, and S-Corp structures, with a focus on why S-Corp status typically isn't available to Korean individuals or entities holding shares directly.

Last updated: August 28, 2026 Read more
Tax & Accounting

How IRS Expense Deductibility Differs From Korea's National Tax Service

A comparison of the IRS's "ordinary and necessary" expense standard versus Korea's NTS documentation-threshold approach, and what that means in practice for running a US entity.

Last updated: August 28, 2026 Read more
FDA & Regulatory

Why One Label Claim Can Block OTC Status: The FDA Labeling Trap

Why using drug-like efficacy language on a cosmetic label can get a product classified as an unapproved drug, and how OTC status is actually determined.

Last updated: August 28, 2026 Read more
Amazon Selling & Advertising

Why Amazon Sellers Fail to Scale

Six recurring patterns behind sellers who launch well but stall or collapse when trying to scale — inventory/cash flow, PPC structure, account health, and brand equity.

Last updated: August 28, 2026 Read more
Amazon Selling & Advertising

How to Manage Negative Search Terms in Amazon Ads

The difference between Negative Exact and Negative Phrase, which search terms should become negatives, and a practical management cadence.

Last updated: August 28, 2026 Read more
Amazon Selling & Advertising

Sponsored Products, Sponsored Brands, Sponsored Display — The Basics and Key Differences

A breakdown of Amazon's three Sponsored ad types — Sponsored Products, Sponsored Brands, and Sponsored Display — what each one is, when to use it, and how sellers typically scale from one to the next.

Last updated: August 28, 2026 Read more
Amazon Selling & Advertising

Top of Search (TOS) and Bid Adjustments — When to Raise Them, When to Lower Them

A look at Amazon Ads' Placement concept and the Top of Search bid adjustment feature, with practical guidance on when to raise or lower it.

Last updated: August 28, 2026 Read more
Tariffs & Trade Policy

How Recent US Tariff Policy Affects K-Food, K-Beauty, K-Lifestyle Goods, and the KORUS FTA

An overview of how US tariff policy toward Korea has shifted repeatedly since 2025, and what that means in practice for K-food, K-beauty, and K-lifestyle goods exporters, alongside the KORUS FTA.

Last updated: August 28, 2026 Read more
US Retail Distribution

How to Get Your Products Into Walmart or Target

The basic structure behind getting into major US retailers — the difference between Vendor and Marketplace paths, and how requirements differ by category for K-beauty, K-food, and K-lifestyle brands.

Last updated: August 27, 2026 Read more
Tax & Accounting

US Corporate Tax Filing — A Checklist of Easy-to-Miss Items

From the dual federal/state filing structure to Form 5472 for foreign-owned entities and sales tax nexus — a checklist of items that are easy to miss when filing US corporate taxes.

Last updated: August 27, 2026 Read more
Trademark & Legal

What Is a Word Mark? — Types of US Trademarks Explained

A breakdown of the difference between Word Marks, Design Marks, and Combined Marks — and which one to register first when protecting your US trademark.

Last updated: August 27, 2026 Read more
Amazon Selling & Advertising

Match Types Explained — Broad, Phrase, and Exact

The same keyword shows up for very different search terms depending on match type. A concrete example shows how Broad, Phrase, and Exact each behave.

Last updated: August 27, 2026 Read more
Amazon Selling & Advertising

Targeting vs. Customer Search Term — What's the Difference?

A clear breakdown, with a hypothetical example, of the difference between the Targeting value in Manual/Auto campaigns and the actual Customer Search Term a shopper typed.

Last updated: August 27, 2026 Read more
Amazon Selling & Advertising

What Is a Search Term Report? — Basic Terms for Beginners

A plain-English breakdown of 8 basic terms in your Amazon Sponsored Products Search Term Report — Impressions, Clicks, CTR, CPC, ACOS, ROAS and more — using a simple hypothetical example.

Last updated: August 27, 2026 Read more
Business Formation

How to Set Up a US Company: LLC Basics

The first question Korean companies face when entering the US: where and in what form to incorporate.

Last updated: August 25, 2026 Read more
Tariffs & Trade Policy

KORUS FTA: How Much Can You Save on Tariffs?

The Korea-US Free Trade Agreement can reduce or eliminate tariffs on many product categories.

Last updated: August 25, 2026 Read more
FDA & Regulatory

K-Beauty & K-Food: Start with FDA Registration

Exporting cosmetics or food to the US requires FDA registration procedures first.

Last updated: August 25, 2026 Read more

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