What Happens to SIP Shares When You Leave Your Job

July 16, 2026

Leaving a job with SIP shares still in the trust triggers an automatic withdrawal — but what happens to those shares, and what tax you owe, depends on the share type and how long you’ve held them.

Step 1 — Know That Leaving Triggers Automatic Withdrawal

Your shares come out of the SIP trust as soon as you leave your job — this isn’t optional or something you can defer by simply not requesting withdrawal. The trust structure only exists while you’re an active participating employee.

Step 2 — Partnership Shares Are Always Yours

Partnership Shares — the ones you bought yourself with pre-tax salary — can never be forfeited, regardless of why or when you leave. You keep the full value of Partnership Shares no matter what, since they were purchased with your own money.

Step 3 — Matching and Free Shares May Be Forfeited Under Some Scheme Rules

Unlike Partnership Shares, Matching Shares and Free Shares can be subject to forfeiture if you leave before a specified holding period under some employer scheme rules — though this isn’t universal, and exact terms vary significantly by employer. Some schemes distinguish between “good leaver” reasons (redundancy, retirement, ill health, and similar circumstances) and other reasons for leaving, applying more favorable treatment to good-leaver departures. Check your specific scheme’s plan document for the exact forfeiture rules that apply to you.

Step 4 — Tax Treatment Follows the Same Holding-Period Rules

Regardless of why you’re leaving, the standard SIP tax rules by holding period still apply to whatever shares you do keep:

Time Held	Tax on Withdrawal
Under 3 years	Full Income Tax + NIC on market value at removal
3–5 years	Income Tax + NIC on the lower of award value or removal value
5+ years	No Income Tax or NIC

Use the Share Incentive Plan calculator to project the tax owed on your specific shares based on how long you’ve actually held them at your leaving date.

Step 5 — Consider the 90-Day ISA Transfer Window

Even if a withdrawal at your leaving date would otherwise trigger tax, transferring the shares into a Stocks and Shares ISA within 90 days of removal from the trust avoids Capital Gains Tax on any growth since removal (though it doesn’t undo Income Tax/NIC already owed under the holding-period rules above). See SIP shares and Capital Gains Tax for the full mechanics of this transfer option.

Step 6 — Redundancy Doesn’t Automatically Mean Tax-Free Withdrawal

It’s a common misconception that redundancy or another “good leaver” circumstance automatically means no tax is owed on SIP shares — it doesn’t. Good-leaver status may affect whether unvested Matching or Free Shares are forfeited under your specific scheme’s rules, but it does not override the standard Income Tax/NIC holding-period rules on shares you do keep. A good-leaver departure at the 2-year mark still triggers full tax on withdrawal unless the shares have actually been held 3+ years.

Step 7 — Plan Ahead If You Know You’re Leaving

If you have advance notice of a departure (a planned resignation, a known redundancy date), check your specific holding periods against the 3-year and 5-year thresholds using the Share Incentive Plan calculator — timing a departure even a few weeks differently can sometimes mean the difference between crossing a threshold or narrowly missing it, which has a real tax impact.

Confirm With Your Specific Scheme

SIP scheme rules — particularly around Matching/Free Share forfeiture and good-leaver definitions — vary by employer and aren’t fully standardized by HMRC. Always check your plan document or ask your employer’s scheme administrator for the exact rules that apply to your situation before making a decision based on assumptions from a general guide like this one.