The New ISA: the savings reform that arrived halfway through a tax year

Illustration inspired by the subject; not an archival image of the events described.
The 2014 Budget announced a change to ISAs that would take effect on 1 July. The New ISA, often called NISA at the time, brought a £15,000 annual limit and more flexibility between cash and stocks-and-shares holdings.
The date made the transition distinctive. The tax year had already begun under one set of limits before the new arrangements arrived. Savers had to understand how money paid in earlier in the year fitted within the revised framework.
A new name around existing accounts
The Treasury's March 2014 factsheet announced equal limits for cash and stocks and shares from July. Its detailed two-page explanation said existing ISAs would automatically become NISAs.
The change therefore did not require every saver to discard an existing account and begin from nothing. It altered the framework around accounts already held, while still leaving provider terms relevant to the facilities available.
That difference is easy to miss in a product launch. A new label can describe a new legal or tax treatment of an existing arrangement, rather than a completely new asset requiring a fresh purchase.
The year had two sets of limits
Before July, the 2014–15 limits described in the factsheet were £5,940 for cash and £11,880 overall. From July, the overall limit became £15,000. Amounts already subscribed during the tax year remained relevant to how much more could be paid in.
In a simple illustration, someone who had subscribed £5,000 earlier in that tax year would have £10,000 of the new £15,000 limit left, assuming no other relevant subscriptions. The reform did not create an additional £15,000 on top of everything already contributed.
These are historical figures and an illustration of the transition. They should not be used as current ISA allowances.
Moving between cash and investments
The factsheet also described a new ability to transfer from a stocks-and-shares ISA to a cash ISA through the providers. Previously accumulated money and new subscriptions therefore needed to be distinguished when explaining what could move and how.
The method of movement mattered. A provider-arranged ISA transfer was different from withdrawing money personally and then paying it into another account. The same apparent journey between two balances could have a different effect on subscription allowances depending on the process used.
That is a useful feature of the history because it shows why tax wrappers involve procedures as well as labels. The destination account alone does not describe the treatment of the journey.
Flexibility did not make assets equivalent
Allowing more movement between cash and investments widened the ways the framework could be used. It did not remove the differences between the underlying assets.
A cash holding and a portfolio of shares can still have different risks, return patterns and suitability for a particular spending horizon. The tax rules describe one aspect of the arrangement; they do not decide the market outcome.
The reform is therefore best understood as a change in permissions and limits. It gave savers more room to organise their holdings within the ISA system without promising that every permitted choice would produce the same result.
Why the short-lived label remains useful
NISA is less prominent in everyday conversation than the broader ISA name. It still appears in old announcements, account literature and personal records because it marked a real transition.
The 2014 story explains why dates matter when reading that material. A document can be accurate for the first months of a tax year and superseded later in the same year. Financial history is sometimes recorded in the space between two versions of an allowance.
Explore saving and investment topics for the wider questions about matching different kinds of account to a financial purpose.
Sources and context
This historical feature draws on published records. It is not a first-hand account or an interview. Historical rules and protections should not be assumed to apply today.
Sources checked 18 September 2026. Our editorial standards.