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Where the tax values come from

Stand: 2 October 2026

The after-tax view in the WildComb Compound Simulator comes pre-filled with typical values for private investors. Every value is listed below with its source: a statute, an official page, or an openly named assumption. Every field can be changed in the calculator. The source pages are checked automatically twice a year, in January and in July, for reachability and changes; nothing is changed automatically, the check only reports. The values are not tax advice, see the disclaimer.

Germany

Tax year 2026 · last verified 28 September 2026

  • Tax on gains: 26.375 %
  • Annual allowance: 1000 €
  • Partial exemption: 30 %
  • Product cost (TER): 0.2 %
  • Inflation: 2 %
  • Tax on gains (statute): § 32d EStG, Abgeltungsteuer 25 %
  • Tax on gains (statute): § 4 SolZG 1995, Solidaritätszuschlag 5,5 % (zusammen 26,375 %)
  • Annual allowance (statute): § 20 Abs. 9 EStG, Sparerpauschbetrag 1.000 €
  • Partial exemption (statute): § 20 InvStG, Teilfreistellung 30 % bei Aktienfonds
  • Overview (official source): Bundesministerium der Finanzen, Steuern
  • Product cost (TER) (assumption): Typical TER of a broad index fund; no official value
  • Inflation (assumption): Long-run assumption at the ECB target of 2 %; no official forecast

United States

Tax year 2026 · last verified 28 September 2026

  • Tax on gains: 15 %
  • Annual allowance: 0
  • Partial exemption: 0 %
  • Product cost (TER): 0.1 %
  • Inflation: 2.5 %
  • Tax on gains (official source): IRS Topic no. 409, Capital gains and losses (0 %, 15 %, 20 % brackets)
  • Overview (official source): IRS, Net Investment Income Tax 3.8 % (not modelled)
  • Product cost (TER) (assumption): Typical expense ratio of a broad index fund; no official value
  • Inflation (assumption): Long-run assumption; no official forecast

United Kingdom

Tax year 2026 · last verified 28 September 2026

  • Tax on gains: 18 %
  • Annual allowance: 3000 £
  • Partial exemption: 0 %
  • Product cost (TER): 0.15 %
  • Inflation: 2.5 %
  • Tax on gains (official source): GOV.UK, Capital Gains Tax rates (18 % basic, 24 % higher)
  • Annual allowance (official source): GOV.UK, Capital Gains Tax allowances (annual exempt amount £3,000)
  • Overview (official source): GOV.UK, Individual Savings Accounts (gains inside an ISA are tax-free)
  • Product cost (TER) (assumption): Typical ongoing charge of a broad index fund; no official value
  • Inflation (assumption): Long-run assumption; no official forecast

Euro area, generic

Tax year 2026 · last verified 28 September 2026

  • Tax on gains: 25 %
  • Annual allowance: 0
  • Partial exemption: 0 %
  • Product cost (TER): 0.2 %
  • Inflation: 2 %
  • Tax on gains (official source): European Commission, Taxes in Europe Database: national rates per country
  • Inflation (official source): Eurostat, Harmonised Index of Consumer Prices
  • Product cost (TER) (assumption): Typical TER of a broad index fund; no official value

No taxes

Tax year 2026 · last verified 28 September 2026

  • Tax on gains: 0 %
  • Annual allowance: 0
  • Partial exemption: 0 %
  • Product cost (TER): 0 %
  • Inflation: 2 %
  • Inflation (assumption): Long-run assumption; every other field is zero by choice

Simulation, not advice. Results are mathematical projections from your own inputs and historical data; they are not a forecast and not investment, tax or legal advice. Past performance does not predict future returns.

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