Ireland version
How it works
Estimate ordinary US self-employment contributions, UK Class 4/voluntary Class 2, or Irish annual self-assessed Class S PRSI. Income tax, USC, capital gains and special exemptions are separate.
This is the Ireland planning view, with monetary inputs and outputs in EUR. A currency label does not establish that a tax rate, construction price, coverage rule or legal limit has been verified locally. The inputs and limitations below describe the actual scope.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
3-
?profit=Annual net business profitMoney · Required · Default: 60,000
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?additional=Other independently verified contribution/additional MedicareMoney · Required · Default: 0
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?rulesConfirmed=Country/year, contribution eligibility and additional charges verifiedTrue or false · Optional · Default: false
Outputs
3-
contributionBaseModeled contribution baseCurrency · Currency: EUR
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contributionModeled contributionsCurrency · Primary output · Currency: EUR
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halfDeductionUS half-SE-tax adjustment before separate limitationsCurrency · Currency: EUR
Formula
US: net earnings × Social Security/Medicare rates, subject to remaining SS wage base. UK: 2026/27 Class 4 marginal bands plus eligible voluntary Class 2. Ireland: 2026 blended Class S rate and minimum.
Calculations retain numeric precision internally. Displayed values are rounded for readability. Quantities that must be purchased as whole units are rounded up only where the formula explicitly requires it.
Read the inputs before calculating
- Annual net business profit: Enter the quantity described by the label.
- Other independently verified contribution/additional Medicare: Enter the quantity described by the label.
- Country/year, contribution eligibility and additional charges verified: Enter the quantity described by the label. Leave this unconfirmed until you have actually checked the required condition.
Reproducible worked example
The following is a fictional arithmetic example, not a local quote, a verified claimant or a market forecast. Its values are included so the formula can be checked. The form does not automatically confirm any verification checkbox.
Country/year, contribution eligibility and additional charges verified: assumed confirmed solely for this fictional demonstration
| Input | Example value |
|---|---|
| Annual net business profit | 60,000 |
| Other independently verified contribution/additional Medicare | 0 |
| Country/year, contribution eligibility and additional charges verified | true |
| Output | Calculated result |
|---|---|
| Modeled contribution base | EUR 60,000 |
| Modeled contributions | EUR 2,542.5 |
| US half-SE-tax adjustment before separate limitations | EUR 0 |
Interpreting a changed assumption
Start with one complete scenario and change only one input when diagnosing a difference. Recheck units, the period of every rate, whether an amount is recurring or one-off, and whether a cost is already included elsewhere. A larger calculated benefit is not evidence that an assumption is more likely to occur.
Limitations
- Planning calculation, not a tax return, benefit decision, credit approval or legal opinion. No eligibility is inferred from a numeric result.
- Only the stated tax year and expressly supported rule components are included. Entered amounts require independent verification.
- Irish self-assessment year 2026: Class S blended rate 4.2375%, minimum €650 once the general €5,000 annual entry threshold applies. Exceptions by age, status, other income or pension must be checked. This annual assessment is distinct from weekly PAYE Class S collection. USC and Income Tax are not included.
- Contribution references checked 2026-09-25.
Frequently asked questions
What does this Self-employment Contribution result represent?
Estimate ordinary US self-employment contributions, UK Class 4/voluntary Class 2, or Irish annual self-assessed Class S PRSI. Income tax, USC, capital gains and special exemptions are separate. It applies the displayed formula to your inputs; it does not infer omitted facts.
Are the starting amounts verified Ireland prices or legal rules?
No. Numeric defaults are illustrative unless an input or dated reference explicitly identifies a researched component. Currency is EUR; local quotes, eligibility and unsupported rules must be entered and verified separately.
What must I check before relying on the result?
Planning calculation, not a tax return, benefit decision, credit approval or legal opinion. No eligibility is inferred from a numeric result. Only the stated tax year and expressly supported rule components are included. Entered amounts require independent verification.
Can I compare or share different assumptions?
Change one assumption at a time and use the browser-local project or share controls. A shared URL contains the encoded input values; do not include information you do not wish to disclose.
Sources and reference scope
- IE income authority — retrieved 2026-09-24. Use only the expressly supported schedule components; this link does not validate unrelated taxes.
These references support only their stated scope. They are not evidence that every local rule or price needed by the master expansion has been loaded.