About Simplicon · Founded 2020US tax roots.
US tax roots.
A global perspective.
Simplicon Tax Advisors LLP was formed by tax professionals to make filing clearer, more organized and less stressful—now supporting clients across the US, UK, Canada and India.
Established in 2020
USUKCAIN
US filing depth. Global coordination.Specialists connect the details across every supported jurisdiction.
7K+Growing client base
4Countries supported
Our foundation
Built around the people behind every return.
Simplicon began as a dedicated US tax filing firm in 2020. Today, we retain that specialist depth while coordinating the wider questions created by international careers, investments, families and businesses.
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From straightforward filings to complex international tax matters.
We support salaried and self-employed individuals, high-net-worth clients and small businesses with clear requests, accountable specialists and practical explanations.
How we work
Principles that make complicated work simpler
Clear before clever
We explain the decision, deadline and next action in language you can use.
One accountable team
Your request has an owner, while specialists collaborate behind the scenes.
Secure by design
Documents, drafts and conversations remain attached to your authorized workspace.
Built for continuity
We keep the context that makes next year faster and planning more valuable.
Where experience matters
Prepared for the details that make a return complex.
Our experience spans simple filings through situations involving equity, overseas income, tax authority correspondence and closely held businesses.
- Individuals, families and high-net-worth clients
- Self-employed professionals and small businesses
- Federal, state, local and international reporting
Stock options and equity
Filing support for employee stock plans, investment activity and related reporting.
Treaties and foreign income
Practical review of tax treaty positions, foreign earned income and cross-border facts.
Notices and amendments
Organized support for tax notices, return corrections and representation needs.
Business entity returns
Partnership, S Corporation and C Corporation filing for growing businesses.
International perspective
Local rules, connected thinking.
Residency, income, investments and business interests do not stop at a border. Our country-focused filing support is designed to surface cross-border questions early.
- United States federal and state filing
- UK Self Assessment and overseas income
- Canadian personal and information returns
- Indian ITR and NRI filing support
The Simplicon experience
Specialist-led from intake to final copy
Understand
We define your filing scope and deadlines.
Organize
Your requests and documents stay together.
Review
A specialist prepares and explains the work.
Continue
Planning carries forward beyond filing day.
Work with Simplicon
A tax team built around your life.
Tell us where you file and what has changed. We will help map the next step.
Start a conversation →