What is the actual difference between a ISA and a SIPP and which one should I be putting money into first?

[Wizard]

I am 32, employed, earning around £38000 a year. I have about £400 a month I could put into savings or investments. I keep reading about ISAs and SIPPs but I am confused about which one to prioritise and whether I can use both. My employer offers a workplace pension and I am already contributing the minimum to get the full employer match.

[ProperJobs89]

Always max your employer pension match first before anything else. That is an immediate 100% return on contribution which no ISA or SIPP can compete with. Since you are already doing that the question becomes what to do with the remaining £400

[Hitman99]

The core difference: ISA money is already taxed going in but grows tax-free and comes out tax-free with no restrictions on when. SIPP money gets tax relief going in - at your income level 20% basic rate relief meaning 80p becomes 100p - grows tax-free, but you cannot access it until 57 and 25% comes out tax-free with the rest taxed as income

[Taker04]

The emergency fund question before any of this: if you do not have three to six months of expenses in an easy access cash account then prioritise that before either the ISA or the SIPP. You do not want to be forced to sell investments or access a SIPP early because an unexpected expense arrives

[GoldbergFan]

At 32 on £38,000 the practical answer for most people is split: prioritise the Stocks and Shares ISA for accessible medium-term savings and use the SIPP for genuine retirement saving. The ISA is more flexible - you can access it for a house purchase, a career break, an emergency. The SIPP is locked away but the tax relief makes it powerful for retirement

[Stuart_67]

The Trading 212 combination of a free ISA and a free SIPP makes it very straightforward to use both simultaneously now. Put 200 in the ISA and 200 in the SIPP monthly and you are building both accessible wealth and tax-advantaged retirement savings at the same time

[CMPunk96]

At £38000 income you are in the basic rate tax band. The 20% relief on SIPP contributions is good but not transformative. If you ever reach the higher rate tax band at 50,270 the SIPP becomes significantly more attractive because 40% relief means 60p turns into 100p. The calculation changes at that point