Partnership Shares: Cost, Pension Effect and Matching

Partnership shares are the SIP shares you buy yourself, funded by salary deducted before Income Tax and National Insurance. They are the only shares in the plan you pay for, and the only ones you can take out whenever you want. Your employer may add matching shares on top.

What makes partnership shares different

Two features separate them from everything else in the plan.

  • You fund them. Free and matching shares come from your employer. Dividend shares come from your own dividends. Partnership shares come out of your gross pay, which is where the relief sits.
  • They are never locked. Free, matching and dividend shares all carry a holding period during which you are bound by contract to leave them with the trustees. Partnership shares carry none. You can withdraw any or all of them at any time, and your plan cannot require you to stop your deductions in order to do it.
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UK Share Incentive Plan Calculator

Free & partnership sharesMatching up to 2:15-year tax-freePAYE + NI relief

Your plan details

HMRC caps partnership shares at £1,800 per tax year (£150/month) or 10% of salary — whichever is lower. The calculation will still run, but a real plan would cap you.
Partnership shares are bought from gross pay, so income tax and NI relief is applied before you ever see the money — the calculator shows your true net out-of-pocket cost, plus the HMRC withdrawal tax at under 3 / 3–5 / 5+ years.
Your projection appears here
Fill in your plan details and press Calculate my equity value — you'll get after-tax value, the tax breakdown bar, a growth chart and a year-by-year table.

Where your money actually goes

Year-by-year projection

Estimates for planning only — not financial or tax advice. Figures follow HMRC rules for free shares (£3,600 a year), partnership shares (£1,800 a year or 10% of salary) and matching shares (up to 2:1), with Income Tax and NIC relief and the under-3 / 3–5 / 5+ year withdrawal treatment. Your plan rules and leaver status may change the outcome.

What the deduction does to your pension, and to your benefits

This worries people more than any other part of the scheme, and the two answers point in opposite directions.

  • Your pension is not reduced. Section 492 of ITEPA 2003 disregards the deduction when working out your remuneration for pension purposes. Contributions are calculated on your salary before the money comes off.
  • Your National Insurance record is reduced. Because the deduction happens before NI is calculated, your NI-able earnings fall. That reaches contribution-based entitlements including State Pension, Statutory Sick Pay and Statutory Maternity Pay, along with some means-tested support.

The risk sits at lower earnings, not higher ones. Every partnership share agreement carries a statutory warning about this, and if your pay is near the lower earnings limit it is the paragraph to read before you sign anything.

The matching shares attached to yours

Where matching is offered, the rules tie it tightly to your purchase. Matching shares must be awarded on the same day as the partnership shares they match, and on the same basis for everyone taking part. Your agreement has to state the ratio and the circumstances in which it may change. Employers can vary that ratio, and some suspend matching when trading is difficult. They have to tell you before the change reaches you.

The link runs both ways. Take your partnership shares out early and the matching shares attached to them are usually forfeited, which is set out under leaver rules.

Four things to check in your agreement

  • The monthly figure and the annual cap, and whether 10% of salary bites before £1,800 does.
  • The matching ratio, and what your employer is allowed to do to it.
  • The forfeiture period sitting on those matching shares.
  • The pricing rule, if your plan accumulates deductions rather than buying monthly. Both are explained under SIP rules.

FAQs

Can my employer change the matching ratio?

Yes. The ratio and the circumstances in which it may change have to appear in your partnership share agreement, and employers can adjust or suspend matching. They must notify you before the new ratio applies to you. Matching shares already awarded are not affected.

Do partnership share deductions reduce my pension?

No. The deduction is disregarded when your remuneration is worked out for pension purposes, so contributions are based on your salary before it comes off. National Insurance-related state benefits are the exception, since those follow your reduced NI-able earnings.

Can I pay in extra to catch up on months I missed?

No. Deductions are capped at £150 a month, or 10% of your salary if that is lower. Because the cap applies monthly, months without a contribution cannot be topped up later, so an agreement started mid-year cannot reach the full £1,800.

What happens to my money before the shares are bought?

The trustees hold it in an account until the purchase date. That account may pay interest, and where it does, the trustees have to account to you for the interest earned on your own contributions.