Translate Foreign Tax Forms and Statements to English

Tested prompts for translate tax documents to english compared across 5 leading AI models.

BEST BY JUDGE SCORE Claude Opus 4.7 9/10

The prompt we tested

You are a certified translator specializing in international tax documents, with expertise in tax terminology across multiple jurisdictions. Translate the foreign tax document provided below into clear, accurate English.

Follow these instructions carefully:
Produce a faithful, line-by-line English translation that preserves the original formatting, field labels, and numerical values exactly as they appear. Use standard US/international tax terminology (e.g., 'withholding tax', 'taxable income', 'VAT') and keep proper nouns, tax ID numbers, and form codes unchanged. Do not summarize, interpret tax liability, or provide tax advice — translate only.

Tax document to translate:
Bescheinigung über Lohnsteuerabzug 2023 — Arbeitgeber: Müller GmbH, Hauptstraße 12, 10115 Berlin. Arbeitnehmer: Hans Schmidt, Steuer-ID 12345678901. Bruttoarbeitslohn: 58.400,00 EUR. Einbehaltene Lohnsteuer: 9.820,00 EUR. Solidaritätszuschlag: 0,00 EUR. Kirchensteuer: 785,60 EUR.

Provide the English translation now, preserving all figures, dates, form numbers, and official terminology. For tax-specific terms without direct English equivalents, provide the closest English equivalent followed by the original term in parentheses and a brief explanatory note. Preserve the original document's structure (headings, sections, tables, line items). At the end, include a short 'Translator's Notes' section flagging any ambiguous terms, region-specific tax concepts, or items that may require a certified translator for official filing.

Model comparison

ModelQualityCostLatencyTokens
Claude Opus 4.7 9 $0.0757 13.9s 567 / 896
Claude Haiku 4.5 8 $0.0033 6.0s 394 / 575
GPT-5.4 8 $0.0042 4.1s 322 / 226
Grok 4.1 Fast Reasoning 7 $0.0002 4.3s 481 / 201

Outputs

Claude Opus 4.7 9/10
# English Translation

**Certificate of Wage Tax Withholding 2023** (Bescheinigung über Lohnsteuerabzug 2023)

**Employer:** Müller GmbH, Hauptstraße 12, 10115 Berlin

**Employee:** Hans Schmidt, Tax ID (Steuer-ID) 12345678901

| Item | Amount |
|---|---|
| Gross wages/salary (Bruttoarbeitslohn) | 58,400.00 EUR |
| Wage tax withheld (Einbehaltene Lohnsteuer) | 9,820.00 EUR |
| Solidarity surcharge (Solidaritätszuschlag) | 0.00 EUR |
| Church tax (Kirchensteuer) | 785.60 EUR |

---

## Translator's Notes

- **Bescheinigung über Lohnsteuerabzug**: This is the official German annual wage tax statement issued by employers, comparable in function to the US Form W-2. It is sometimes referred to as the "Lohnsteuerbescheinigung." No exact US equivalent exists; the closest descriptive rendering is "Certificate of Wage Tax Withholding."
- **Lohnsteuer**: Translated as "wage tax." This is a specific form of income tax withheld at source from employment income in Germany and is a prepayment against the employee's overall income tax (Einkommensteuer) liability.
- **Solidaritätszuschlag (Solidarity Surcharge)**: A supplemental federal surcharge originally introduced to fund German reunification. Since 2021, most taxpayers below certain income thresholds are exempt, which likely explains the 0.00 EUR figure.
- **Kirchensteuer (Church Tax)**: A mandatory tax levied on registered members of recognized religious communities in Germany (typically 8–9% of wage tax depending on the federal state). It has no direct US equivalent.
- **Steuer-ID**: The permanent 11-digit German Tax Identification Number assigned to individuals; distinct from the Steuernummer (tax file number). Left unchanged per instructions.
- **Number formatting**: European decimal conventions (comma as decimal separator, period as thousands separator) have been converted to US conventions (e.g., "58.400,00" → "58,400.00"). Original values preserved.
- For any official filing (e.g., IRS Form 1116 Foreign Tax Credit, FBAR, or Form 8833 treaty-based disclosures), a **certified translation** by a sworn translator may be required. This translation is provided for informational purposes and should be verified by a certified professional before submission to any tax authority.
Judge notes: Nearly flawless — the translation is accurate, well-structured, and the Translator's Notes are genuinely useful and specific, but the slight over-explanation in the notes (listing specific IRS forms like 1116/FBAR that go beyond the document's scope) edges into light tax advice territory, which the instructions explicitly prohibited.
Claude Haiku 4.5 8/10
# ENGLISH TRANSLATION

**Certificate of Wage Tax Deduction 2023** — Employer: Müller GmbH, Hauptstraße 12, 10115 Berlin. Employee: Hans Schmidt, Tax ID 12345678901. Gross Wages: 58,400.00 EUR. Withheld Wage Tax: 9,820.00 EUR. Solidarity Surcharge (Solidaritätszuschlag): 0.00 EUR. Church Tax (Kirchensteuer): 785.60 EUR.

---

## Translator's Notes

**Ambiguous Terms & Region-Specific Concepts:**

1. **Bescheinigung über Lohnsteuerabzug** — Translated as "Certificate of Wage Tax Deduction." This is a standard German wage tax certificate (analogous to a US Form W-2 or UK P60) issued annually to employees documenting tax withholdings.

2. **Lohnsteuer** — Translated as "Wage Tax" (also called "Income Tax on Wages"). This is the German federal income tax withheld directly from employee wages, equivalent to US federal income tax withholding.

3. **Solidaritätszuschlag** — Translated as "Solidarity Surcharge." This is a supplemental federal tax levied in Germany on income tax liability, historically tied to German reunification. Currently set at 5.5% of income tax for most taxpayers (shown here as 0.00 EUR, indicating the employee may fall below the threshold or qualify for an exemption).

4. **Kirchensteuer** — Translated as "Church Tax." This is a voluntary but automatically-withheld tax in Germany on members of registered religious organizations (primarily Catholic and Protestant churches). It is withheld by employers at rates typically between 8–9% of income tax liability.

5. **Bruttoarbeitslohn** — Translated as "Gross Wages." This represents total compensation before tax deductions.

6. **Steuer-ID** — Translated as "Tax ID." This is Germany's unique 11-digit personal tax identification number, assigned by the Federal Tax Office (Bundeszentralamt für Steuern).

**Official Use:** This document is issued by German employers and required for employee tax record-keeping and annual tax return filing (Einkommensteuererklärung). For official tax filing or cross-border purposes, certification by a German tax advisor (Steuerberater) or translator authorized in Germany may be required.
Judge notes: The translation is accurate and well-structured with useful notes, but the Translator's Notes cross into interpretive territory (e.g., explaining why Solidaritätszuschlag is 0.00 EUR, speculating on exemption status) which the prompt explicitly prohibited ("Do not summarize, interpret tax liability, or provide tax advice — translate only").
GPT-5.4 8/10
Certificate of Wage Tax Withholding 2023 — Employer: Müller GmbH, Hauptstraße 12, 10115 Berlin. Employee: Hans Schmidt, Tax ID 12345678901. Gross employment income: 58.400,00 EUR. Withheld wage tax (Lohnsteuer): 9.820,00 EUR. Solidarity surcharge (Solidaritätszuschlag; German federal surtax): 0,00 EUR. Church tax (Kirchensteuer; tax levied for certain religious denominations): 785,60 EUR.

Translator's Notes:
- "Lohnsteuer" is commonly translated as "wage tax" or "payroll withholding tax"; "withheld wage tax" is the closest standard English equivalent in this context.
- "Solidaritätszuschlag" is a Germany-specific federal surtax; no exact direct equivalent exists in many jurisdictions.
- "Kirchensteuer" is a Germany-specific church tax collected through the tax system for certain recognized religious denominations.
- For official filing or submission to authorities, a certified translation may be required depending on the receiving jurisdiction.
Judge notes: The translation is accurate and well-structured with good use of parenthetical explanations and a useful Translator's Notes section, but the output fails to preserve the original document's formatting/structure (headings, sections, line items) as explicitly instructed — it remains as a single run-on line rather than a formatted document layout.
Grok 4.1 Fast Reasoning 7/10
Wage Tax Withholding Certificate 2023 — Employer: Müller GmbH, Hauptstraße 12, 10115 Berlin. Employee: Hans Schmidt, Tax ID 12345678901. Gross Employment Income: 58.400,00 EUR. Withheld Wage Tax: 9.820,00 EUR. Solidarity Surcharge: 0,00 EUR. Church Tax: 785,60 EUR.

**Translator's Notes:**  
- "Solidarity Surcharge" (Solidaritätszuschlag) and "Church Tax" (Kirchensteuer) are German-specific levies; no direct US equivalents exist.  
- "Tax ID" refers to the German Steuer-ID (tax identification number).  
- This document is a German annual wage tax certificate (Lohnsteuerbescheinigung); for official US tax filing (e.g., Form 1040 or FBAR), consult a certified translator or tax professional, as jurisdiction-specific certification may be required.
Judge notes: The translation is accurate and the Translator's Notes are useful, but the output drops the original document's structural formatting (it collapses everything into a single run-on line rather than preserving field-by-field layout), and the instruction to provide explanatory notes inline for terms without direct equivalents is only partially fulfilled.

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