Profile coverage
Profiles group official and reference sources by topic, jurisdiction, and effective period so calculator pages can show consistent assumptions and source notes.
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Dataset
Calxo AI Source Registry
Source profiles and official reference links used by source-backed Calxo AI calculators. Each profile records jurisdiction, country coverage, effective period, assumptions, exclusions, calculator coverage, and verification date.
Updated 2026-07-08. Version 2026.07.08.
37
Profiles
93
Unique sources
107
Source rows
10
Countries
Source rows
The downloadable CSV expands profiles into one row per source link, including publisher, source label, effective period, countries, linked calculator count, and last verified date.
Corrections
When an official source changes, update the source profile before changing calculators so the data directory, APIs, and calculator notes stay aligned.
Profiles
Source registry profiles
37 profiles, 107 source rows
country
Indirect tax source notes
5
Sources
This profile covers generic VAT, GST, HST, and similar indirect-tax calculations. The calculator applies the rate entered by the user; it does not choose the legally correct rate for a product, province, state, or filing situation.
- Countries
- India, United Kingdom, UAE, Canada, Australia, Singapore, New Zealand, Germany
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
India income tax source notes
3
Sources
This profile covers a simplified India individual income tax estimate for ordinary slab-rate income. It compares the new regime slabs for FY 2025-26 with a basic old-regime estimate for individuals below 60.
- Countries
- India
- Effective period
- FY 2025-26 / AY 2026-27
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
India HRA exemption source notes
1
Sources
This profile covers the common India HRA exemption formula for salary income under the old tax regime. The exemption is the least of actual HRA received, rent paid minus 10% of salary, and 40% or 50% of salary depending on city type.
- Countries
- India
- Effective period
- FY 2025-26 / AY 2026-27
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
India GST source notes
3
Sources
This profile covers a dedicated India GST add/remove calculation. The calculator applies the GST rate selected by the user and does not determine the correct HSN, SAC, exemption, or place-of-supply treatment.
- Countries
- India
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
India PPF source notes
1
Sources
This profile covers a simplified Public Provident Fund projection. The calculator uses the annual deposit and interest rate entered by the user and compounds yearly for a planning estimate.
- Countries
- India
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
India EPF/PF source notes
2
Sources
This profile covers a simplified Employees' Provident Fund corpus projection. It separates employee EPF, employer EPF, and the employer EPS diversion so users can see what is being projected into the EPF balance.
- Countries
- India
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
India NPS source notes
2
Sources
This profile covers a simplified National Pension System projection with a user-entered return rate, contribution amount, annuity share, and annuity rate.
- Countries
- India
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
US federal income tax source notes
3
Sources
This profile covers a simplified United States individual federal income tax estimate for tax year 2026. It applies the 2026 standard deduction, ordinary income brackets, selected filing status, and user-entered credits.
- Countries
- United States
- Effective period
- Tax year 2026
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
US FICA payroll tax source notes
3
Sources
This profile covers a simplified US FICA payroll tax estimate using the 2026 Social Security wage base, employee Social Security and Medicare rates, and Additional Medicare Tax thresholds.
- Countries
- United States
- Effective period
- Calendar year 2026
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
US 401(k) contribution source notes
3
Sources
This profile covers a simplified 401(k) contribution and employer match estimate for 2026. It applies the IRS employee elective deferral limit, catch-up limits, and a user-entered match formula.
- Countries
- United States
- Effective period
- Tax year 2026
- Linked calculators
- 1
- Last verified
- 2026-05-28
country
US Roth IRA source notes
3
Sources
This profile covers a simplified Roth IRA eligibility and projection estimate for 2026 using the IRS IRA contribution limit, catch-up amount, and MAGI phase-out ranges.
- Countries
- United States
- Effective period
- Tax year 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
UK income tax and National Insurance source notes
3
Sources
This profile covers a simplified UK employment income estimate for tax year 2026/27. It applies the Personal Allowance taper, rest-of-UK or Scottish non-savings income tax bands, and employee Class 1 National Insurance thresholds.
- Countries
- United Kingdom
- Effective period
- Tax year 2026/27
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
UK Stamp Duty Land Tax source notes
3
Sources
This profile covers a simplified England and Northern Ireland residential Stamp Duty Land Tax estimate using current marginal bands, first-time buyer relief, higher rates for additional dwellings, and the non-resident surcharge.
- Countries
- United Kingdom
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
UK VAT source notes
3
Sources
This profile covers a UK VAT add/remove calculation. The calculator applies the selected VAT rate to a single amount and can split VAT-inclusive prices into net and VAT portions.
- Countries
- United Kingdom
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
UK ISA allowance source notes
3
Sources
This profile covers a simple UK ISA allowance tracker using the annual adult ISA allowance and Lifetime ISA annual limit. It estimates remaining allowance and the Lifetime ISA government bonus on eligible planned contributions.
- Countries
- United Kingdom
- Effective period
- Tax year 2026/27
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
UK pension auto-enrolment source notes
3
Sources
This profile covers a simplified UK workplace pension auto-enrolment estimate using the 2026/27 earnings trigger, qualifying earnings band, and minimum employee and employer contribution percentages.
- Countries
- United Kingdom
- Effective period
- Tax year 2026/27
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
Australia GST source notes
2
Sources
This profile covers a simplified Australia GST add/remove calculation using the selected GST rate. The default standard-rate scenario uses 10% GST for taxable supplies, but the calculator does not determine product classification or registration treatment.
- Countries
- Australia
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
UAE VAT source notes
2
Sources
This profile covers a simplified UAE VAT add/remove calculation using a selected VAT rate. The default standard-rate scenario uses 5% VAT, with zero and custom options for scenarios the user has already verified.
- Countries
- UAE
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
province
Canada GST/HST source notes
2
Sources
This profile covers a simplified Canada GST/HST and provincial tax add/remove calculation using province and territory rates published by the Canada Revenue Agency, including Nova Scotia's 14% HST from April 1, 2025.
- Countries
- Canada
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
Germany VAT source notes
2
Sources
This profile covers a simplified Germany VAT add/remove calculation using standard, reduced, zero, or custom VAT rates selected by the user. It does not decide whether a supply qualifies for reduced or zero treatment.
- Countries
- Germany
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
Singapore GST source notes
2
Sources
This profile covers a simplified Singapore GST add/remove calculation. The default standard-rate scenario uses the current 9% GST rate from 1 January 2024, with zero and custom options for user-verified situations.
- Countries
- Singapore
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-29
country
New Zealand GST source notes
2
Sources
This profile covers a simplified New Zealand GST add/remove calculation using the selected GST rate. The default standard-rate scenario uses 15% GST for taxable supplies.
- Countries
- New Zealand
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
country
Pakistan sales tax source notes
2
Sources
This profile covers a simplified Pakistan sales tax add/remove calculation. The default rate is a planning input for common standard-rate scenarios, but users should confirm the applicable schedule, sector, province, and product treatment.
- Countries
- Pakistan
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
state
Sales tax source notes
2
Sources
This profile covers generic sales tax add/remove calculations. The calculator applies the rate entered by the user and does not determine nexus, local surtaxes, exemptions, or item-specific rules.
- Countries
- United States, Canada
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
global
Capital gains source notes
3
Sources
This profile covers a generic capital-gain estimate. The calculator computes gain and tax from the rate entered by the user; it does not choose the rate or determine special treatment.
- Countries
- Global
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-27
global
Investment projection source notes
2
Sources
This profile covers deterministic investment projections such as recurring investments, compounding, retirement savings, and dollar-cost averaging. Results depend entirely on the rate and contribution assumptions entered by the user.
- Countries
- Global
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-06-23
global
Bullion reference source notes
2
Sources
This profile covers bullion value estimates from spot prices, purity, weight, currency conversion, and broad market adjustment settings.
- Countries
- India, UAE, Pakistan
- Effective period
- 2026
- Linked calculators
- 1
- Last verified
- 2026-05-27
country
India tax expansion source notes
3
Sources
This profile supports India advance tax, salary TDS, capital gains, house-property income, and stamp-duty planning calculators. Inputs expose rates, thresholds, and local values where state or asset-specific rules can vary.
- Countries
- India
- Effective period
- FY 2025-26 / AY 2026-27
- Linked calculators
- 5
- Last verified
- 2026-06-23
country
US tax expansion source notes
4
Sources
This profile supports US paycheck withholding, self-employment tax, estimated tax, capital gains, state income tax, and family credit planning calculators.
- Countries
- United States
- Effective period
- Tax year 2026
- Linked calculators
- 6
- Last verified
- 2026-06-01
country
UK tax expansion source notes
4
Sources
This profile supports UK student loan, capital gains, dividend, savings interest, and self assessment payment-on-account planning calculators.
- Countries
- United Kingdom
- Effective period
- Tax year 2026/27
- Linked calculators
- 5
- Last verified
- 2026-06-01
country
Australia tax expansion source notes
4
Sources
This profile supports Australia income tax, Medicare levy, PAYG withholding, HELP repayment, super guarantee, capital gains, and stamp-duty planning calculators.
- Countries
- Australia
- Effective period
- 2026/27
- Linked calculators
- 6
- Last verified
- 2026-06-01
country
UAE tax and payroll expansion source notes
4
Sources
This profile supports UAE corporate tax, end-of-service gratuity, excise tax, VAT return, and import landed-cost planning calculators.
- Countries
- UAE
- Effective period
- 2026
- Linked calculators
- 5
- Last verified
- 2026-06-01
province
Canada tax expansion source notes
5
Sources
This profile supports Canada income tax, payroll deductions, RRSP room, TFSA room, capital gains, and land transfer tax planning calculators.
- Countries
- Canada
- Effective period
- 2026
- Linked calculators
- 6
- Last verified
- 2026-06-01
country
Germany tax expansion source notes
4
Sources
This profile supports Germany wage tax, net salary, church tax, solidarity surcharge, capital income tax, and real estate transfer tax planning calculators.
- Countries
- Germany
- Effective period
- 2026
- Linked calculators
- 5
- Last verified
- 2026-06-01
country
Singapore tax expansion source notes
5
Sources
This profile supports Singapore individual income tax, CPF contributions, property stamp duty, property tax, corporate income tax, and self-employed MediSave planning calculators.
- Countries
- Singapore
- Effective period
- 2026
- Linked calculators
- 6
- Last verified
- 2026-06-01
country
New Zealand tax expansion source notes
5
Sources
This profile supports New Zealand income tax, PAYE, student loan, KiwiSaver, bright-line property tax, and provisional tax planning calculators.
- Countries
- New Zealand
- Effective period
- 2026/27
- Linked calculators
- 6
- Last verified
- 2026-06-01
country
Pakistan tax expansion source notes
2
Sources
This profile supports Pakistan salary income tax, withholding tax, ATL filer impact, property transfer tax, capital gains tax, and sales tax return planning calculators.
- Countries
- Pakistan
- Effective period
- Tax year 2026
- Linked calculators
- 6
- Last verified
- 2026-06-23