US & India tax filing.
One secure, organized experience.

Expert support for individuals and businesses filing across the United States, United Kingdom, Canada and India.

USUKCAIN
8 yearsSpecialist-led tax support
4 countriesCoordinated global filings
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Your filing workspaceSecure client workflow
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Filing progressIn progress
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Organizer receivedCompleted securely
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Specialist reviewIn progress with your tax team
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Approve & fileReview your final return
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Return readyDocuments securely stored
Supported filings
USUKCAIN
Clear, fixed pricingPrivate document workspaceYear-round specialist accessCross-border coordination
Our services

Everything you need to file with confidence

From a straightforward individual return to complex business and cross-border matters, your filing stays organized in one secure workspace.

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Business tax filing

Accurate filing and planning for founders, contractors, partnerships and companies.

Business services →
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ITIN applications

End-to-end ITIN support for taxpayers, spouses and dependants filing in the US.

Apply for an ITIN →
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Amended returns

Correct prior-year filings and resolve missing income, deductions or reporting.

Amend a return →
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Notices & representation

Professional help responding to tax notices, reviews, enquiries and audits.

Get representation →
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Tax planning

Practical planning for compensation, investments, property and business decisions.

Plan ahead →
Where we file

Local expertise.
Global perspective.

Each country has its own filing rules, forms and deadlines. Our specialists bring them together when your life or business crosses borders.

Discuss a multi-country filing →
UK

United Kingdom

Self Assessment, property, capital gains, overseas income and residency.

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CA

Canada

T1 returns, self-employment, investments, rental income and T1135 support.

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How it works

A calmer way to complete your taxes

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Create your secure account

Tell us what you need and open a trackable service request.

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Share your documents

Complete the organizer and upload files directly to your ticket.

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Work with your specialist

Follow progress, answer questions and review drafts in one place.

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Approve and file

Receive your finalized filing documents and a complete activity history.

Secure client portal

Your tax work, finally in one place.

Requests, documents, messages, assignments and final copies stay connected from start to finish.

Sign in to workspace →
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Track every request

Clear status, owner and next action.

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Upload securely

Validated files in a private workspace.

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Keep every conversation

A complete history attached to each ticket.

Client stories

Trusted when the details matter

★★★★★
“Professional, helpful and patient with every tax question. Four years later, they are still the team I trust.”
RSRam ShankarAtlanta, United States
★★★★★
“They handled our LLC and employee stock options exceptionally. The process was smooth and completed on time.”
DBDipankar BalasubramanianSan Jose, United States
★★★★★
“Moving countries made tax season stressful. Simplicon connected the details and gave us one clear plan.”
NKNisha KapoorLondon, United Kingdom
★★★★★
“Responsive, precise and refreshingly easy to work with. Our Canadian filing was organized from day one.”
MPMichael PereiraToronto, Canada
Ready when you are

Make this tax season simpler.

Start a secure request and let our specialists guide the next step.

Get started securely →