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Enter the disposal details
Add the asset details, disposal value, acquisition cost, and relevant allowable costs to create your starting estimate.
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Capital Gains Tax Planner
Estimate potential UK Capital Gains Tax on planned disposals, compare scenarios, and see how timing, losses, ownership, and assumptions may affect your estimated tax position before taking action.
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Estimate and compare UK Capital Gains Tax scenarios
Planiva’s Capital Gains Tax Planner helps you build a structured estimate for a planned asset disposal in the UK and compare how different assumptions may change the result. It is designed for planning and scenario comparison, so you can explore gains, losses, timing choices, ownership assumptions, and estimated after-tax proceeds before deciding what to do next.
How it works
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Adjust planning assumptions
Explore how losses, ownership split, timing, or other relevant planning assumptions may affect the estimated position.
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Compare scenarios
Review alternative versions side by side to see how changes in assumptions alter the result.
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Review the estimated position
See the projected gain, indicative tax outcome, and estimated after-tax proceeds to support more informed planning.
What this planner helps you do
Use the planner to turn an initial disposal idea into a clearer view of the tax implications before moving ahead or taking advice.
Estimate potential tax exposure
Build a structured estimate of the potential Capital Gains Tax effect of a disposal using the facts and assumptions you enter.
Compare disposal options
Test how changes in timing, ownership, losses, or assumptions may affect the estimated result.
Understand the main drivers
See which inputs are having the biggest effect on the estimated gain and tax outcome.
Focus on estimated proceeds after tax
Look beyond the disposal value and see a more realistic estimate of what may remain after tax.
Core features
The planner is designed to support practical disposal planning in a clearer and more structured way.
Scenario-based disposal modelling
Build and compare disposal cases to test how the estimated position changes under different assumptions.
Disposal and cost inputs
Capture the core values that shape the estimate, including disposal proceeds, acquisition cost, and allowable costs.
Comparison-ready assumptions
Adjust relevant assumptions that may affect the estimated result so different planning options are easier to assess.
Ownership-aware comparisons
Explore how different ownership assumptions may affect the estimated gain and tax position.
Decision-focused summaries
Review outputs designed to support planning and comparison rather than a single static figure.
Scenarios you can model
The planner is suited to common disposal-planning situations where you want a clearer estimate before proceeding further.
Single planned disposal
Estimate the potential Capital Gains Tax effect of one planned disposal using your current assumptions.
Compare disposal timing
Explore how a different timing assumption or tax-year context may change the estimated position.
Ownership split scenarios
Test how different ownership assumptions may affect the estimated gain and tax outcome.
Loss utilisation scenarios
Compare the estimated result with and without available losses, or under different loss assumptions.
Key assumption comparisons
See how the estimate changes when important planning assumptions are included, excluded, or adjusted.
Outputs and insights
The planner is designed to return practical outputs that help you assess and compare options more clearly.
Estimated gain summary
See a clear view of the estimated gain position based on the disposal details and assumptions entered.
Indicative tax outcome
Review an indicative view of the potential Capital Gains Tax position for each scenario.
Estimated after-tax proceeds
Understand the estimated net position after tax so different options can be compared more realistically.
Scenario comparison view
Compare scenarios side by side to see the practical effect of different planning choices.
Who it is for
This planner is best suited to people who want a clearer planning view before making a disposal decision.
Individuals planning to sell or dispose of an asset
Useful if you want an early estimate before selling, gifting, or otherwise disposing of an asset.
People weighing different disposal options
Helpful when you want to compare timing, ownership, or loss assumptions rather than rely on one rough figure.
Users who want planning support before advice
Best for exploring possible outcomes before taking advice, not for tax filing or formal tax calculations.
Notes and limitations
This planner is designed to support planning and comparison. It does not replace professional tax advice, and outputs depend on the facts and assumptions entered.
Shared trust notes
- This planner supports scenario modelling and comparison. It is intended to help you think through decisions, not to replace regulated financial, tax, legal, or investment advice.
- Outputs depend on the details, assumptions, and tax rules used at the time of modelling. Real-world outcomes can differ if those assumptions change or if relevant information is incomplete.
Planner-specific notes
- Estimates may change if disposal facts, cost history, ownership position, or assumptions are incomplete or incorrect.
- The planner is intended for planning scenarios and may not reflect every exemption, relief, edge case, or complex fact pattern.
- Outputs are indicative estimates to support decision-making and should not be treated as filing-ready tax calculations.
- Tax treatment depends on personal circumstances and current rules, so professional advice should be considered before action is taken.
Frequently asked questions
What does the Capital Gains Tax Planner help me do?
It helps you estimate and compare potential UK Capital Gains Tax outcomes for a planned disposal so you can see how different assumptions may affect the result before acting.
Is this a Capital Gains Tax calculator?
It is a planning tool rather than a simple calculator. It is designed to help you build and compare disposal scenarios, not just produce one headline figure.
Can I compare different disposal scenarios?
Yes. You can compare different assumptions, such as timing, ownership, or available losses, to see how the estimated result changes.
Is this planner for filing my tax return?
No. It is designed for planning and estimation rather than tax filing or formal tax advice.
Will this give me an exact Capital Gains Tax bill?
No. It provides an indicative estimate based on the information and assumptions entered, not an exact or filing-ready tax amount.
Who is this planner best suited to?
It is best suited to people who want a more structured way to explore likely tax implications before proceeding with a disposal or taking further advice.
Related tools
Capital Gains Tax planning often sits alongside broader tax, cash flow, and long-term planning decisions.
Access the Capital Gains Tax Planner in beta
Join the Planiva beta to explore this planner as part of the wider planning workbench.