About

One Coordinated Record, Built for the Business It Belongs To.

Custom One exists for businesses whose financial activity has outgrown scattered spreadsheets, delayed reconciliations, and records that only make sense at tax time.

Why Custom One Exists

Most small businesses do not have a bookkeeping problem so much as a coordination problem. Revenue arrives through several channels, expenses run through several accounts, and each system tells a partial version of the month. The books are supposed to be the place all of it resolves into one number set that agrees.

That is the work: customized treatment of a specific business's activity, applied consistently, reconciled every month, and explained in language the owner can use.

Pending confirmationThe firm's founding story, legal name, and any affiliation with Custom Accounting Inc. are published only after Custom One confirms them in writing.

Approach to Customization and Communication

  • Understand first. Before categorizing anything, understand how the business earns, pays, collects, and closes.
  • Treat activity consistently. The same transaction type should be recorded the same way every month, so trends mean something.
  • Surface open items. Unresolved differences are listed, not smoothed over.
  • Leave room for questions. A report you cannot ask about is not finished.

Reserved for an authentic, approved photograph of Lian Yuan. No generated or stock likeness is used.

Lian Yuan

This section is reserved for Lian's approved professional story — current role, background, bookkeeping experience, software knowledge, client-service philosophy, languages spoken, and connection to San Francisco.

Pending confirmationNo title, credential, or role is stated until confirmed. Lian is not described as founder, owner, CPA, EA, or principal without written approval, and no biography is invented.

The Team

A real team section — names, roles, credentials, and approved photographs — will be added once the firm supplies them.

Pending confirmationTeam size is not advertised before verification, and no placeholder people are shown.

Certifications and Languages

Software certifications and supported languages are listed here only when the firm provides them. This site is written in English and does not claim service in any other language.

A San Francisco neighborhood commercial street with small independent businesses

San Francisco Connections

Custom One serves San Francisco and the Greater Bay Area. Community involvement, neighborhood ties, and local affiliations will be described here once confirmed by the firm.

Contact Custom One