Worldwide Tax Comparison
Compare caller-parameterized citizenship- and residence-based tax scenarios.
Description
Worldwide taxation compares tax bases and credits across residence and citizenship scenarios.
Worldwide taxation compares tax bases and credits across residence and citizenship scenarios. This calculator applies both stated rates to worldwide income, then limits the citizenship-side foreign credit.1
Compare caller-parameterized citizenship- and residence-based tax scenarios.
When to use Worldwide Tax Comparison
Use this tool to compare caller-parameterized citizenship- and residence-based tax scenarios.
Choose the specific arithmetic or checklist scenario and establish its input amounts, dates, rates and criteria from the applicable records. Keep currencies, periods and jurisdictions consistent; review the tool-specific assumptions before interpreting the result.
How to use Worldwide Tax Comparison and understand its results
- Choose the specific arithmetic or checklist scenario and establish its input amounts, dates, rates and criteria from the applicable records. Keep currencies, periods and jurisdictions consistent; review the tool-specific assumptions before interpreting the result.
- Enter worldwideIncome, foreignSourceIncome, citizenshipSystemRatePercent, residenceSystemRatePercent, foreignTaxPaid using the field table and calculation rules, then run the tool.
- Read citizenshipSystemTaxBeforeCredit, foreignTaxCredit, citizenshipSystemTaxAfterCredit, residenceSystemTax, taxDifference. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| worldwideIncome | Worldwide income | number; minimum: 0 | Required |
| foreignSourceIncome | Foreign-source income | number; minimum: 0 | Required |
| citizenshipSystemRatePercent | Citizenship-system rate (%) | number; minimum: 0 | Required |
| residenceSystemRatePercent | Residence-system rate (%) | number; minimum: 0 | Required |
| foreignTaxPaid | Foreign tax paid | number; minimum: 0 | Required |
Supply nonnegative income, foreign tax and rates, with foreign income no greater than worldwide income. Residence tax is worldwide income times the residence rate. Return citizenship tax before/after credit, residence tax and their signed difference.
citizenNet=max(0,worldwide×citizenRate/100−min(foreignTax,foreignIncome×citizenRate/100)); difference=citizenNet−residenceTax Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| citizenshipSystemTaxBeforeCredit | Citizenship-system tax before credit | number; minimum: 0 |
| foreignTaxCredit | Foreign tax credit | number; minimum: 0 |
| citizenshipSystemTaxAfterCredit | Citizenship-system tax after credit | number; minimum: 0 |
| residenceSystemTax | Residence-system tax | number; minimum: 0 |
| taxDifference | Citizenship minus residence tax | number |
{
"input": {
"worldwideIncome": 1000,
"foreignSourceIncome": 500,
"citizenshipSystemRatePercent": 20,
"residenceSystemRatePercent": 10,
"foreignTaxPaid": 50
},
"output": {
"citizenshipSystemTaxBeforeCredit": 200,
"foreignTaxCredit": 50,
"citizenshipSystemTaxAfterCredit": 150,
"residenceSystemTax": 100,
"taxDifference": 50
}
}Limitations and assumptions
This is a caller-defined flat-rate comparison. It does not establish residence, tax treaties, credit categories or progressive tax liability.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Sourcing Tax Comparison: Compare origin- and destination-sourced tax using caller-supplied rates. For a complementary task, use Remote-Work Tax Overlap: Estimate overlapping remote-work state taxes using caller-supplied rates and creditability.
References
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Worldwide Tax Comparison — tool.io
Similar or alternative tools
- Sourcing Tax Comparison
Compare origin- and destination-sourced tax using caller-supplied rates.
- Remote-Work Tax Overlap
Estimate overlapping remote-work state taxes using caller-supplied rates and creditability.