Property

Shared Ownership Share Calculator

Your share of property value.

Use the interactive calculator below for an instant estimate. Results depend on your inputs and the assumptions shown on the page.

Methodology and source status

Scope: Property, mortgage, landlord, and home-moving estimates; tax rules vary across UK nations.

Primary reference: GOV.UK Stamp Duty Land Tax residential-property rates.

Source record: Direct statutory or government source. This link is the calculator-specific evidence path, not a statement that every individual input or exception is current.

Effective period: England and Northern Ireland only. Check the transaction date, purchaser status, reliefs, surcharges and linked HMRC calculator before relying on an estimate.

Review status: Source path published; no named calculator-level review is currently represented here.

Last source or expert review: No calculator-level source or expert review date is published.

Technical validation: 12 August 2026 — catalogue build, route, metadata, and internal-link checks completed. This is a technical delivery check, not a review of current rates, rules, sources, calculations, or personal circumstances.

Next review trigger: Review when a relevant rate, threshold, provider fee, tax period, rule, or formula changes.