Client intake, structured before engagement review.
A cross-border client's file typically arrives as W-2s, foreign bank and brokerage statements, K-1s, prior returns, pension documents, and FBAR/FATCA paperwork, across several formats and languages. Reviewing associates spend the opening hours of an engagement determining what the file contains before any tax question is addressed.
NettWorth performs that determination. Documents are submitted once; the firm receives a structured summary in return.
Submission is identified to the firm's engagement. The client uploads once; the firm receives the structured result.
Marcus T. · US expat, London
Tax overview · 2025 · 8 documents structured
Multi-jurisdiction detected: US + UK
US-UK tax treaty and foreign tax credit relief in scope. FBAR and FATCA thresholds both crossed. FTC carryforward mapped from 2024.
FBAR in scope
Barclays + ISA: approx $74,200 (threshold $10,000)
Income
P60 · 1099-NEC · Divs
Gains
ISA · Brokerage 1099-B
Obligations
FBAR · FATCA · FinCEN
Prior returns
2024 Form 1040 · SA100
Structured data, not a filing position. Determinations remain with the firm.
Jurisdiction summary, compliance flags, FTC carryforward, and filing obligations, structured from the submitted documents.
The opening hours of an engagement, spent on inventory.
A cross-border client's submission is typically incomplete by default: the brokerage statement arrives, the cost basis does not; a foreign pension is referenced in correspondence rather than documented. Reconstructing the financial picture by hand precedes billable work on every new engagement.
Senior time on data entry
Partner and manager time is spent sorting documents and identifying gaps before the first tax question is addressed. NettWorth structures submitted documents on arrival, so review begins on substance.
Missing-data identification
Cross-border files routinely omit cost basis, documentation for referenced accounts, or details of a pension mentioned only in passing. NettWorth flags what is missing and what is inconsistent ahead of review.
Realization impact
Time spent assembling data is not billable at advisory rates. Reducing reconstruction time allows the same staffing to carry a larger caseload at a higher realization rate per engagement.
Structuring occurs before the file reaches the firm.
Each document is read, cross-referenced against the client's existing profile, and checked against what is present, flagged, or still outstanding, prior to delivery.
- ✓Document triage on arrival, ahead of engagement review
- ✓FBAR and FATCA thresholds tracked automatically
- ✓Context extracted from correspondence and cover notes
- ✓Missing items flagged with specificity, not general gaps
- ✓Foreign accounts, pensions, and equity treated as first-class data
Text extraction is a solved problem. Cross-jurisdiction meaning is not.
Reading a document is not the constraint. Determining what the figures mean across multiple jurisdictions, tax years, and compliance regimes the client was not aware applied to them, is.
Cross-border instruments, identified at intake.
Locally recommended products routinely carry US filing consequences the client was not advised of. NettWorth identifies these instruments at the point a statement is structured, ahead of engagement review.
France
assurance-vie
PFIC per policy under US rules. Form 8621, tax up to roughly 40% of the gain.
Germany
thesaurierende Fonds
PFIC per fund. PRIIPs restricts the usual route into US-domiciled funds instead.
Netherlands
Box 3 index funds
PFIC on the US side, while Box 3 itself is under revision on the Dutch side.
Spain
Modelo 720
The same account reported twice, against thresholds that don't align.
Italy
UCITS funds
Form 8621 per fund, alongside Quadro RW. No straightforward local alternative.
Portugal
NHR to IFICI transition
Advice from the prior regime, held against local funds already in PFIC territory.
Switzerland
Pillar 3a
The account most Swiss banks recommend first is the one that creates the US filing question.
A structured client summary, delivered as a read-only link.
Each client's profile is provided as a link, with no credential to maintain: every account inventoried, every compliance flag raised, every gap identified, prior-year carryforwards already mapped. For firms operating TaxDome, Canopy, or a comparable system, the profile is delivered directly into it.
- ✓Financial inventory across jurisdictions and instruments, organized once
- ✓Compliance flags applied: FBAR, FATCA, treaty positions, PFIC
- ✓Context extracted from correspondence, not only formal documents
- ✓Prior-year FTC carryforwards and relevant lot basis carried forward
- ✓Outstanding items identified; NettWorth requests them from the client directly
- ✓Every figure linked to its source document and page
Barclays + ISA balances exceeded $50,000 in June. Both FinCEN 114 and Form 8938 required.
Marcus mentioned paying off a London flat mortgage in portal notes. No closing statement uploaded.
$9,400 FTC carryforward on 2024 Form 1116 (Passive). New ISA flagged for PFIC evaluation.
Monthly payslips for the UK tax year (April to April) are missing for the cash-basis FTC calculation.
Document submission to structured file, in three steps.
No installation, and no separate signup required of the client. Firms operating TaxDome, Canopy, or a comparable system receive the profile delivered directly into it.
Document submission
The client uploads or forwards documents to NettWorth under the firm's engagement, in any format or language, once rather than across an extended exchange.
Structuring
Documents are consolidated into a single client profile: accounts, income, foreign holdings, equity, prior-year positions. Missing or inconsistent items are flagged.
Delivery as a structured summary
The profile is provided as a read-only link, organized and checked. The client record persists on NettWorth between filing seasons, so the following year begins from a structured base rather than an empty file.
Scope of engagement
NettWorth structures the submitted documents. The firm retains advisory judgment, the filing position, and the signature. Where a client's wealth manager also uses NettWorth, the same client record is shared across both relationships.
The client submits once, to a record they keep.
Submission runs through NettWorth, identified to the firm's engagement. The client uploads documents once and retains a structured record of their own financial position between filing seasons — the following year's engagement begins from a maintained file, not a fresh document request.
One submission point
The client uploads or forwards documents in any format or language. No software evaluation, no extended email exchange.
Firm attribution
The engagement carries the firm's name. The structured deliverable routes to the firm alone.
Access control
Firm staff see the profiles of clients engaged with the firm. Clients see only their own record.
Structural PII separation
Identity is separated from financial figures at the database level, not by policy.
Document submission
Engagement: Whitfield & Partners · 2025 filing
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Submitted once, structured on arrival, routed to the firm's engagement.
The client's submission page on NettWorth, identified to the firm's engagement.
What the firm gains.
Capacity in the compressed season
Intake structuring is complete before review begins. The same staffing carries a larger caseload through the filing window, and senior hours go to the tax questions rather than the document sort.
Fewer missing documents
The client's record is maintained on NettWorth year-round, not assembled each spring from email attachments and shared folders. Gaps are identified and requested from the client ahead of review.
Season two starts structured
The client record persists between engagements. The following year opens on a maintained file, with prior-year carryforwards and lot basis already mapped.
Client SSNs and filed returns pass through this system.
The terms under which NettWorth holds that data:
No model training
Client data is processed to build the profile and for nothing else. It is not used to train models.
Export and deletion
Full export and permanent deletion on request, at any time. NettWorth retains no rights to the underlying data.
PII separation
Identity is stored separately from financial figures at the database level.
Residency options
GDPR-aligned, with data residency available on request for firms with jurisdiction-specific requirements. NettWorth's revenue is the structuring fee. Data is not sold.
Questions from cross-border tax firms.
Review the deliverable on a single case.
A real, anonymized cross-border case, submitted to NettWorth, returns exactly what the firm would receive.
A sandbox environment with a sample German, French, or Swiss case is also available on request.
Questions? hello@nettworth.ai