Federal and state returns
Form 1040 preparation, state and local filing support, extensions and prior-year returns where appropriate.
United States tax servicesUS tax filing,
US tax filing,
organized from start to finish.
Online federal, state, expat and business tax return support for individuals and businesses in the United States and abroad.
US tax preparation
Support matched to your filing situation
We review the return, related schedules and cross-border questions together so requests stay clear and work is not duplicated.
Expats and foreign reporting
Foreign income, tax residency, foreign tax credits and coordination of FBAR or FATCA reporting requirements.
Business and self-employment
Schedule C, partnerships, corporations, rental activity, contractor income and business filing support.
ITIN applications
Application and renewal guidance, document requirement review and return coordination when an ITIN is needed.
How it works
A secure online filing process
Start with a short scope review. Your specialist then requests the relevant records, prepares the filing and works through questions before finalization.
- 1Tell us what you need
Share the tax year, states, income types and any international connections.
- 2Upload securely
Use the client portal for tax documents and revisions.
- 3Review and complete
Resolve questions, review the prepared return and complete the agreed filing steps.
US filing questions
Frequently asked questions
Can Simplicon prepare US tax returns online?
Yes. Clients can coordinate remotely and share requested documents through the secure client portal.
Do you support federal and state tax returns?
We support federal returns and applicable state or local filings after reviewing residency, income and filing requirements.
Can you help US taxpayers living abroad?
We support expatriate and cross-border filings, including foreign income and information-reporting questions such as FBAR and FATCA.
Do you provide ITIN application support?
Yes. We help eligible taxpayers understand document requirements and coordinate an ITIN application or renewal with a return when required.
Start your return
Contact Simplicon →Ready to organize your US tax filing?
Tell us the tax year and filing situation. We will confirm the next step and what to prepare.