I'm 27-years-old and want to open my first Isa - where should I start and is it the right option?

I'm 27 years old and want to start saving. Should I open an Isa? I'm in full-time employment and I contribute to the company pension scheme but I don't have lots of spare cash. What should I do? Sophie Warburton of This is Money replies: Opening an individual savings account (Isa) is a great way to earn tax-free interest on your money.It might sound complicated and daunting at first, but opening an account only takes a few minutes.There are different types of Isas including Cash Isas, Stocks and Shares Isas, Lifetime Isas (Lisas), Innovative Finance and Junior Isas.And now might be the perfect time to investigate each one, as Isa allowances are changing in 2027. Isas allow you to save and invest by shielding your interest, profits and dividends from taxRight now, you can save up to £20,000 a year in a cash Isa but come April 2027, you'll only be allowed to put in up to £12,000.If you're keen to get looking for the best deals, we've already compiled a list ordered by rate. And banks and building societies can't pay to appear or boost their position.We've also put your question to the financial experts.Charlene Young, head of technical at AJ Bell, says: Assuming you've addressed any short-term expensive debts like overdrafts and credit cards, you should aim to hold enough cash to cover you in the event of an emergency. This figure is different for everyone, but a good rule of thumb is three months' worth of essential spending. This money should be in an account you can access easily if you need it and could be an easy access Cash Isa or savings account. Which is best will depend on the rates on offer and your income tax rate. Most people can earn some interest tax-free thanks to the personal savings allowance (PSA), which is £1,000 a year for basic rate taxpayers, £500 for higher rate taxpayers, but completely withdrawn for anyone paying additional rate tax. Whatever cash option you choose – make sure you shop around for the best rate to suit your needs but also keep an eye on when any promotional or bonus rates will end in case you need to switch.'Long term vs short term'Consider investing anything else you can put towards the longer term, which is five years or more to ride out any market dips in the short term. History consistently shows that investing gives you the best chance of growing your wealth over and above inflation than cash savings and plenty of people choose to save and invest using different types of Isas at the same time, thanks to the generous allowance on offer.What can hold people back from investing is the myth that you already need to have a big lump sum to get started. You don't need vast sums of cash to put away; just £50 a month into a stocks and shares Isa could grow to nearly £8,000 in ten years, highlighting the powerful impact of investing little and often. If you do choose to invest your extra cash the best way to stick with it is to automate it. You can set up a regular payment into a stocks and shares Isa and decide in advance which specific investments it will go into so that's also taken care of for you.A stocks and shares Isa lets you invest tax-free but still have access to your money when you need it. But if you're saving for your first home, a Lisa is still an option as you're under 40. You can invest up to £4,000 a year and the government tops it up by 25 per cent.There is a catch though – your first home must be worth £450,000 or less, otherwise you'll be charged a 25 per cent withdrawal penalty. Charlene says a common myth that holds people back from investing is how much cash they should haveApril Leeson, Senior Chartered Financial Planner at The Private Office says: It's great to hear that this person is keen to start saving, as the sooner you do, the easier it can be to form a good savings habit which can build a healthier financial future.It's also ideal that you are contributing into your company pension scheme, as this will help to give you some income in retirement. And it means that you are not missing out on your company's contributions, which is effectively free money.An easy-to-access cash buffer of savings is the first thing to build up, for those life events and curveballs such as an unexpected car or tax bill.After that, what you do with your cash savings really depends on what you need the money for and when. But tax-free Isas are good to consider, as making the best use of the tax allowances available is sensible. There's no need to wait until you start saving into an Isa. There is no minimum amount that makes an Isa worthwhile (although there may be a minimum deposit required), so getting started is more important than waiting until you have built up a larger sum. April says you shouldn't leave money to languish in a current accountIf you are looking to save in order to buy your first home, the Lisa is something to consider. While there are some features that you should be aware of, mainly a penalty if you withdraw the money for anything other than buying your first home, or after the age of 60, the 25 per cent government bonus alongside tax-free returns makes this a great option for first-time buyers. It has been reported that the Lisa is to be replaced with a new First Time Buyer Isa in April 2028, but we don't know all the details yet. And until then you can still open a Lisa and continue to contribute going forwards.However, if you might need access to the money in the short term, leaving it in cash might be a more sensible option. You cannot use a Lisa towards a first home purchase, for at least 12 months. And if you withdraw the money for any other reason before age 60, you will normally face a 25 per cent withdrawal charge.But you shouldn't leave the money to languish in a current account earning no interest, as there are plenty of competitive savings rates available.When to consider stocks and shares IsaApril Leeson continues: Once your cash buffer is established, it may then be appropriate to branch out into longer-term investments.A stocks and shares Isa is more appropriate for those who are saving for the longer term, so five-plus years saving, as the funds will go up and down with markets. But, if you are comfortable with the inevitable bumps in the road and you do not sell when the markets have fallen, over the long-term, a S&S Isa has the potential to provide a higher return than cash, as historically cash returns have often struggled to keep pace with inflation, meaning your savings lose real-value over time.However, investing isn't suitable for money that you might need in an emergency.Any investment into a S&S Isa should ideally be money that you can afford to be without for a few years, as the nature of stock markets means the pot will go down as well as up. Having cash in the bank that is available in an emergency and does not fluctuate allows you to leave your investments alone and gives them time to recover from any dips in the market.There are various places that will offer some guidance as to which funds to use, but a low-cost investment platform could be suitable whilst funds are building.S&S Isas come with costs though, whilst cash Isas don't usually cost anything to open or maintain.There is also nothing to stop you using more than one type of Isa, as long as you keep within the annual Isa allowance which is £20,000 (which includes anything saved into a Lisa).Putting some money into a cash Isa and some into a S&S Isa could be a sensible way to diversify your savings between accessible cash and longer-term investments.You don't need to have a huge amount of money before you start saving or investing.Starting early, saving regularly and choosing the right home for your money based on when you might need it are much more important.DIY INVESTING PLATFORMSAJ BellAJ BellEasy investing and ready-made portfoliosHargreaves LansdownHargreaves LansdownFree fund dealing and investment ideasinteractive investorinteractive investorFlat-fee investing from £4.99 per monthFreetradeFreetradeInvesting Isa now free on basic planTrading 212Trading 212Free share dealing and no account feeAffiliate links: If you take out a product This is Money may earn a commission. 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