Comparison · updated monthly
Dimov Tax is a full-service US CPA firm. It's done-for-you and quote-based — not self-serve PFIC software.
Dimov Tax presents CPA-led tax services; verify its current credentials, scope, and quote directly. Atamatax is narrower self-serve software: its diagnostic and supported on-screen calculations are free, while generating draft forms and worksheets is paid.
Who Dimov Tax is for
Atamatax fits users who want to self-prepare supported foreign-account and PFIC inputs and file themselves. Foreign business forms, full crypto or equity-compensation treatment and a CPA on the file are Dimov's territory; verify its current service scope directly.
Where each sits
Products in different categories are not better or worse than each other; they are for different returns. The category that matches your situation is the one to compare inside.
Dimov Tax
General expat preparation
A preparer or a workflow built for Americans abroad across the common forms — 2555, 1116, FBAR, 8938 — with foreign funds handled as an add-on.
Atamatax
Complex foreign-investment workflow
Import the foreign portfolio, identify the PFICs, compute the allocation per holding and per year, reconstruct missing basis, and produce the workpapers.
Professional handoff
The analysis packaged for an accountant to file from — classification with its reason, worksheets per holding, threshold arithmetic, an assumption log.
Self-serve tax software
You enter the figures and file the return yourself; the software computes the forms it supports.
Side-by-side
Delivery model
- Atamatax
- Self-serve software; you stay in control of the flow.
- Dimov Tax
- Done-for-you by a CPA/preparer.
Pricing
- Atamatax
- $299 / $499 / $799 flat per return, shown upfront.
- Dimov Tax
- Quote-based; varies with complexity.
Free on-screen summary before paying
- Atamatax
- Yes — see your real numbers, then decide.
- Dimov Tax
- Engagement-based; typically no free self-serve draft.
Form 8621 (PFIC)
- Atamatax
- Built-in; up to 25 per return.
- Dimov Tax
- Handled by the firm; priced into the engagement.
FBAR (FinCEN Form 114)
- Atamatax
- Generated in the same flow.
- Dimov Tax
- Handled by the firm.
Business / partnership / S-corp returns
- Atamatax
- Federal expat-individual focus; not a business-return product.
- Dimov Tax
- Full coverage — a core strength.
Equity comp & crypto complexity
- Atamatax
- Expat-baseline; complex cases may need a firm.
- Dimov Tax
- Hands-on CPA work — a strength.
Turnaround
- Atamatax
- Self-paced; you can finish in one sitting.
- Dimov Tax
- Depends on firm capacity and back-and-forth.
Speaking to a human professional
- Atamatax
- Software-first; honest that it isn't a CPA firm.
- Dimov Tax
- Direct access to a CPA — a strength.
Each row states what the two products do as of September 2026. We update this page when their offering changes — tell us if it's out of date.
Two Atamatax product lines appear in this table. Self-serve software for one tax year — $299 (no PFICs), $499 (up to 25 Forms 8621) and $799 (treaty positions) — and the Streamlined catch-up preparation tiers at $1,590–$2,990+, which are quoted in writing after a free scope check and prepared with you. They are different services at different prices.
Bottom line
Atamatax supports a narrower self-serve foreign-account and PFIC workflow, with open items identified and no e-file or professional review. Situations involving a business, partnership, complex equity compensation, or crypto fall outside that promise; verify another provider's current scope directly.
Before choosing either
Check the facts the price depends on
- Is my fund a PFIC?Screens a fund or ETF by ISIN or domicile — the count of PFICs is what a per-form price turns on.Free · no signup
- PFIC filing cost calculatorWhat Form 8621 preparation is likely to cost from your holdings and years, to set beside a per-form quote.Free · no signup
- US expat tax calculatorWhich forms your year actually needs, and an outlook on the tax — the list the price on either side should be quoted against.Free · no signup
How this comparison was made
- Competitor facts come from Dimov Tax's own published pages — the price list, the plan descriptions, the forms list — and are linked under Sources where a public page exists. Where a price is quoted per case, the table says so rather than guessing a number.
- Dimov Tax publishes its pricing per engagement rather than as a list, so the table describes the model and quotes no figure.
- Atamatax's prices are rendered from the pricing configuration the checkout uses, so the table cannot show a price the product does not charge.
- Rows describe scope, not quality: no cell is marked as a winner, and the bottom line says who is better served by the other product.
Out of date? Tell us and the row is re-read. Atamatax pricing · Comparison methodology and index
Sources
Compare on your own situation
Which Atamatax package would your return actually need?
A few questions name the forms, the package and the price for your year — then the comparison above is about you, not about a generic expat.
Or skip the questions: the on-screen draft is free and you pay when you generate the package — start my return.