It's not about which is "better" in general, but whether you should do a SAYE or a SIP. It just depends on which one works with your saving habits, your tolerance for risk, and how long you are willing to wait to cash out. This guide breaks down both schemes so you can decide with confidence.
Quick Answer
SAYE (Sharesave) suits people who want a low-risk, fixed-term savings plan with a guaranteed share discount and no chance of losing money. SIP (Share Incentive Plan) suits people who want to build a larger shareholding over time, especially if their employer offers generous free or matching shares.
There's no single winner; the right choice depends on your circumstances. Calculate your Share Incentive Plan savings by using one of the best SIP calculators available on the internet.
What Is a SIP (Share Incentive Plan)?
The Share Incentive Plan UK scheme allows your employer to award or sell company shares to you through a trust. The catch is the holding period of the SIP. You have to have held the shares in the trust for five years to be totally free of income tax and national insurance. Usually, there is a tax charge if you take them out early. There are four SIP share types:
Free shares: your employer can give you up to £3,600 worth per year at no cost.
Partnership shares: you can buy up to £1,800 per year (or 10% of salary, whichever is lower) directly from your pre-tax salary.
Matching shares: Your employer can add up to two free shares for every one Partnership Share you buy.
Dividend shares: dividends from your SIP shares can be reinvested to buy more shares, tax-free at the point of purchase.
What Is SAYE (Sharesave)?
SAYE vs SIP is based on a completely different model. With Sharesave, you agree to save a fixed amount, from £5 to £500 a month, into a Sharesave savings contract for a period of three or five years.
Your employer will initially set a price for the SAYE options, which can be discounted by up to 20% below the market value of the shares. When the savings contract matures, you choose whether to use your savings to buy shares at that fixed price or just take your cash back.
This is what makes the Sharesave scheme the real low-risk model in the UK. If the share price falls below your option price, you are never forced to buy. Just take your savings and run.
SIP vs SAYE: Comparison Chart
| Feature | SIP (Share Incentive Plan) | SAYE (Sharesave) |
|---|---|---|
| How it works | The employer gives or sells you shares directly into a trust | You save monthly, then choose to buy shares at a fixed price |
| Contribution limits | Up to £3,600 free shares + £1,800 partnership shares per year | £5 to £500 per month |
| Tax treatment | Tax-free after 5 years in the trust | Gain on exercise is always free of Income Tax and NI |
| Risk level | Share value can fall while shares sit in the trust | No risk to savings; you can decline to buy if the price falls |
| Lock-in period | 5 years for full tax relief | 3 or 5-year savings contract |
| Leaving your job | "Good leaver" reasons avoid the tax charge; otherwise, tax may apply | "Good leavers" can exercise within 6 months; others get their savings back |
Which Scheme Is Right for You?
Use these questions to narrow it down:
Want zero risk to your savings? Lean toward SAYE.
Want to build a long-term shareholding with employer top-ups? Lean toward SIP, especially if matching shares are offered.
Need your money back within three years? SAYE's shorter contract fits better.
Comfortable locking in for five years for full tax relief? SIP becomes more attractive.
Employer only offers one of the two? That decision is made for you. Focus on understanding the rules of what's available.
Tax Treatment Comparison
Both schemes are tax-free share options but differ in mechanics.
With SIP, tax relief is duration-based. The longer the shares are held in the trust, the less tax you have to pay when you take them out. After five years, there is a total exemption.
With SAYE, the tax relief is tied to the discount itself. When you exercise your option, any gain between your option price and the market price is always free of income tax and national insurance, whatever the size of that gain.
After exercise or withdrawal, if you hold shares, Capital Gains Tax can still apply to both schemes and still go up in value, but some of that gain can be sheltered by your annual CGT allowance.
Risk and Flexibility Compared
Here is the where the two schemes really start to diverge. SIPs lock up real value: free and matching shares are a real financial benefit, but are worth what the share price is while sitting in the trust.
SAYE gets rid of almost all that downside. You only buy shares when it makes sense, so your monthly savings are safe even if the company's share price falls.
Which Is Better If You Want Lower Risk?
SAYE is the clearer choice here. You're never obligated to buy shares, so a falling share price simply means you walk away with your savings rather than losing money. SIP shares, by contrast, can lose value while they're held in the trust, particularly partnership shares you've paid for yourself.
Which Is Better for Short-Term Savers?
SAYE's three-year contract option gives you a defined, shorter commitment with guaranteed tax-free treatment of any gain at exercise. SIP is built around a five-year horizon for full tax relief, so it suits people thinking longer term rather than those who want their money back sooner. Learn which SIP calculator is useful for businesses.
Can You Be in Both a SIP and SAYE Scheme?
Yes, in most cases. Since they're separate schemes with separate contribution limits, many UK employers run both at the same time, and nothing is stopping you from joining each one if you're eligible.
Frequently Asked Questions
What happens to my SAYE savings if the share price falls below the option price?
You simply don't exercise the option. Your monthly savings, plus any applicable bonus or interest, are returned to you in full. You never lose money under a Sharesave scheme, even if the company's share price drops significantly.
Can the same employer run both a SIP and a SAYE scheme at once?
Yes, this is common practice among larger UK employers. The two schemes serve different purposes. Running both gives employees more flexibility to choose what suits them.
Does having SIP shares affect my eligibility for SAYE, or vice versa?
No. SIP and SAYE are governed by separate HMRC rules with their own contribution limits, so participating in one doesn't reduce your entitlement to the other.
What's the minimum and maximum I can save each month under SAYE?
You can save as little as £5 a month and as much as £500 a month across your SAYE contracts. Once your monthly amount is set at the start of the contract, HMRC rules don't allow you to change it, though you can miss a limited number of payments without losing your place in the scheme.
What happens to unvested SIP shares if I'm made redundant?
Redundancy is typically treated as a "good leaver" reason, which means you can usually withdraw your free and matching shares without triggering the normal early-withdrawal tax charge. This differs from resigning voluntarily, where standard holding-period tax rules apply.