UK Share Incentive Plan Calculators
Five focused tools, each answering one specific SIP question. Not sure which one you need? Use the decision table below, or start with the full Share Incentive Plan Calculator for the complete picture.
Share Incentive Plan Calculator
Contribution, matching, free shares, tax saved and future value — all in one estimate.
Best for: a first, full overviewOpen calculator → TaxSIP Tax Savings Calculator
Isolates the Income Tax and NIC saved by buying partnership shares from gross salary.
Best for: deciding how much to contributeOpen calculator → ContributionsPartnership Shares Calculator
Shows which cap — £1,800 or 10% of salary — limits your contribution.
Best for: checking your allowanceOpen calculator → Employer matchMatching Shares Calculator
Estimates what your employer's specific matching ratio is worth, and forfeiture risk.
Best for: comparing employer offersOpen calculator → Free sharesSIP Free Shares Calculator
Checks your free share award against the £3,600 annual limit.
Best for: performance-linked awardsOpen calculator → WithdrawalSIP Holding Period Calculator
Checks the likely tax outcome if you withdrew specific shares today.
Best for: deciding when to sellOpen calculator →Not sure which calculator you need?
| Your question | Use this tool |
|---|---|
| "What's my SIP worth overall?" | Main SIP Calculator |
| "How much tax will I save?" | SIP Tax Savings Calculator |
| "Am I hitting my contribution limit?" | Partnership Shares Calculator |
| "Is my employer's match generous?" | Matching Shares Calculator |
| "What are my free shares worth?" | Free Shares Calculator |
| "Should I withdraw my shares now?" | Holding Period Calculator |
Related guides
What Is a Share Incentive Plan?
A complete UK guide to how SIPs work.
GuideSIP Tax Benefits Explained
How the tax savings actually work.
GuideHolding Period Rules
What happens after 3 and 5 years.