De Estimated Tax

Germany Estimated Tax (Vorauszahlungen) -- Self-Employed Skill v2.0

General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.

Section 1 -- Quick reference

Instalment schedule summary:

Conservative defaults:

Section 2 -- Required inputs and refusal catalogue

Required inputs

Minimum viable -- the Vorauszahlungsbescheid from the Finanzamt, OR the most recent Einkommensteuerbescheid (assessment notice).

Recommended -- the Steuernummer, current year estimated income (if adjustment needed), wage tax certificates (Lohnsteuerbescheinigung) if the client also has employment income.

Ideal -- complete Vorauszahlungsbescheid, prior year Steuerbescheid, BWA (Betriebswirtschaftliche Auswertung) for current year projections.

Refusal policy if minimum is missing -- SOFT WARN. Without a Vorauszahlungsbescheid or prior assessment, no prepayments are legally due. If the client expects significant income, advise voluntary set-aside.

Refusal catalogue

R-DE-ET-1 -- Cross-border income interactions. Trigger: client has income from multiple countries with DTAA credits affecting prepayments. Message: "Cross-border income and treaty credit timing are outside this skill. Please consult a Steuerberater."

R-DE-ET-2 -- Partnership prepayment allocation. Trigger: client asks about Vorauszahlungen for a partnership (Personengesellschaft). Message: "Partnership prepayment allocation is outside this skill."

R-DE-ET-3 -- Gewerbesteuer computation. Trigger: client asks about trade tax prepayments. Message: "Gewerbesteuer-Vorauszahlungen are a separate obligation. This skill covers Einkommensteuer only."

Section 3 -- Payment pattern library

This is the deterministic pre-classifier for bank statement transactions. When a debit matches a pattern below, classify it as an ESt prepayment.

3.1 Finanzamt income tax debits

3.2 Timing-based identification

3.3 Solidarity surcharge and church tax debits

3.4 Related but NOT ESt prepayments

3.5 Bank transfer references

Section 4 -- Worked examples

Example 1 -- Standard quarterly prepayment

Input: Vorauszahlungsbescheid sets annual prepayment at EUR 4,000.

Example 2 -- Below minimum threshold

Input: Computed annual prepayment = EUR 350.

Output: Below EUR 400 annual minimum. Finanzamt will NOT set prepayments.

Example 3 -- Late payment surcharge

Input: Q2 instalment EUR 1,500 due 10 June. Grace period ends 13 June. Payment made 15 July.

Computation: Months late = 2 (June and July both commenced). Surcharge = EUR 1,500 x 1% x 2 = EUR 30.

Example 4 -- Solidarity surcharge check

Input: Annual ESt prepayment = EUR 16,000 (EUR 4,000/quarter). Single filer.

Computation: ESt EUR 16,000 < EUR 18,130 threshold. SolZ = 0% (fully exempt).

Example 5 -- Bank statement classification

Input line: 10.06.2025 ; LASTSCHRIFT FINANZAMT MUENCHEN ; DEBIT ; ESt-VZ Q2/2025 ; -2,500.00 ; EUR

Classification: ESt prepayment, Q2 2025. Not a deductible business expense -- tax payment.

Section 5 -- Computation rules

5.1 How the Finanzamt sets prepayments

prior_year_ESt = income tax from last assessment
minus_wage_tax = Lohnsteuer withheld
minus_KapESt = Kapitalertragsteuer withheld
minus_credits = other credits (foreign tax credits etc.)
prepayment_base = prior_year_ESt - wage_tax - KapESt - credits
annual_prepayment = prepayment_base (rounded down to nearest EUR divisible by 4)
quarterly_instalment = annual_prepayment / 4

The Finanzamt may adjust upward or downward based on expected income changes.

5.2 Minimum thresholds

Below these thresholds, no prepayments are set.

5.3 Weekend/holiday rule

If the 10th falls on a Saturday, Sunday, or public holiday, the due date shifts to the next business day (AO Paragraph 108 Abs. 3).

5.4 Adjustment window

The Finanzamt may adjust prepayments until the 15th month after the end of the calendar year. For tax year 2025: adjustments possible until 31 March 2027.

5.5 Year-end settlement

final_tax = ESt on actual income
total_prepaid = sum of all Vorauszahlungen
if total_prepaid > final_tax: Erstattung (refund)
if total_prepaid < final_tax: Nachzahlung (balance due)

5.6 Solidarity surcharge on prepayments

Joint filers: thresholds doubled.

Section 6 -- Penalties and interest

6.1 Late payment surcharge (Saeumniszuschlag)

6.2 Computation

if payment_date > due_date + 3_days:
    months_late = number of commenced months from due_date
    surcharge = floor(unpaid_amount / 50) * 50 * 1% * months_late

6.3 Interest on arrears (Nachzahlungszinsen)

Rate: 0.15% per month (1.8% per year). Interest-free period: 15 months after end of tax year. Applies to both underpayments and overpayments.

Section 7 -- Requesting adjustments

7.1 Herabsetzung (reduction)

Taxpayer writes to the Finanzamt (letter or ELSTER message) explaining why current-year income will be lower. Supporting documents (BWA, profit projection) should be attached. Finanzamt issues a new Vorauszahlungsbescheid.

7.2 Heraufsetzung (increase)

Taxpayer may voluntarily increase prepayments if income is rising, to avoid a large Nachzahlung.

7.3 Risk of reduction

If the reduction is excessive and actual tax exceeds prepayments significantly, Nachzahlungszinsen of 0.15% per month may apply after the 15-month interest-free period.

Section 8 -- Edge cases

EC1 -- New freelancer, no prior assessment. No Vorauszahlungsbescheid issued. No prepayments due until the first Steuerbescheid. Client should voluntarily set aside estimated tax.

EC2 -- Prior year included large one-off capital gain. Vorauszahlungsbescheid inflated. Request Herabsetzung with evidence the gain was non-recurring.

EC3 -- Church tax prepayments. Member of evangelisch or katholisch church: 8% or 9% of ESt depending on Bundesland. Set alongside ESt in the same Vorauszahlungsbescheid, same dates.

EC4 -- Gewerbesteuer interaction. Client pays Gewerbesteuer and claims EStG Paragraph 35 credit. Finanzamt should account for the credit when setting ESt prepayments. If not, request adjustment. Flag for Steuerberater.

EC5 -- Multiple income sources. Prepayments are set on the net ESt after all source-specific deductions. Verify the Vorauszahlungsbescheid reflects all income types.

Section 9 -- Self-checks

Before delivering output, verify:

• Vorauszahlungsbescheid amount confirmed or estimated correctly
• Minimum thresholds (EUR 400/year, EUR 100/quarter) checked
• All four quarterly dates identified with weekend/holiday adjustments
• Solidarity surcharge threshold applied correctly
• Late payment surcharge computed with 3-day grace period
• Any adjustment request flagged for reviewer
• Church tax prepayment included if applicable
• Gewerbesteuer Paragraph 35 credit considered
• Year-end settlement formula presented
• Output labelled as estimated until Vorauszahlungsbescheid confirmed

Section 10 -- Test suite

Test 1 -- Standard quarterly prepayment

Input: Annual prepayment per Bescheid = EUR 4,000. Expected: Q1-Q4 = EUR 1,000 each. Dates: 10 Mar, 10 Jun, 10 Sep, 10 Dec.

Test 2 -- Below minimum threshold

Input: Computed annual prepayment = EUR 350. Expected: Below EUR 400 minimum. No prepayments set.

Test 3 -- Late payment surcharge

Input: Q2 EUR 1,500 due 10 Jun. Paid 15 Jul. Grace period ends 13 Jun. Expected: 2 commenced months. Surcharge = EUR 1,500 x 1% x 2 = EUR 30.

Test 4 -- Solidarity surcharge exempt

Input: Annual ESt = EUR 16,000. Single filer. Expected: Below EUR 18,130. SolZ = 0%.

Test 5 -- New freelancer

Input: Registered as Freiberufler 2025. No prior Steuerbescheid. Expected: No Vorauszahlungen due. Advise voluntary set-aside.

Test 6 -- Year-end settlement (refund)

Input: Total prepaid = EUR 8,000. Final ESt = EUR 6,500. Expected: Erstattung = EUR 1,500.

Test 7 -- Year-end settlement (balance due)

Input: Total prepaid = EUR 8,000. Final ESt = EUR 11,000. Expected: Nachzahlung = EUR 3,000.

Prohibitions

• NEVER compute prepayments without checking whether a Vorauszahlungsbescheid has been issued
• NEVER ignore the EUR 400/EUR 100 minimum thresholds
• NEVER forget the 3-day grace period (Schonfrist) when computing late surcharges
• NEVER apply solidarity surcharge without checking the exemption threshold
• NEVER present prepayment amounts as definitive -- the Vorauszahlungsbescheid is authoritative
• NEVER advise reducing prepayments without warning about Nachzahlungszinsen risk
• NEVER confuse ESt prepayments with Gewerbesteuer prepayments
• NEVER ignore church tax prepayments for church members

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a Steuerberater or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.

The most up-to-date, verified version of this skill is maintained at openaccountants.com. Log in to access the latest version, request a professional review from a licensed accountant, and track updates as tax law changes.

Source: OpenAccountants — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: source-cited draft. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (openaccountants-mcp).