thisbank 15-Month Fixed Term DepositFixed for 15 months · from £100Beats inflationSole accounts only; open online or in the appDetails for thisbank 15-Month Fixed Term Deposit
Access
No withdrawals during the term (14-day cooling-off; exceptional circumstances only).
Maximum
£500,000
Conditions
UK resident aged 18+ with a UK mobile, email and UK bank account. Sole accounts only; open online or in the app. Interest paid annually and at maturity.
Interest paid
Once a year
Manage by
Online, Mobile app
FSCS licence
THIS BANK LIMITED
Deposit-taker
thisbank, a trading name of THIS BANK LIMITED
Incorporated in
United Kingdom
Regulated
Yes, by the Prudential Regulation Authority and Financial Conduct Authority (FRN 832786)
Protection and disputes
Financial Services Compensation Scheme and Financial Ombudsman Service
Capital
Paid-up capital and reserves of £25.6m at 31 March 2025 (latest published accounts).
Tandem Bank 18 Month Fixed Term SaverFixed for 18 months · from £1Beats inflationFunds must come from a verified UK bank accountDetails for Tandem Bank 18 Month Fixed Term Saver
Access
Account locks after the 14-day funding window; no withdrawals until the term ends.
Maximum
£2,500,000
Conditions
Funds must come from a verified UK bank account. Managed in the Tandem app.
Interest paid
Once a year
Manage by
Mobile app, Online
FSCS licence
Tandem Bank Limited
Deposit-taker
Tandem Bank, a trading name of Tandem Bank Limited
Incorporated in
United Kingdom
Regulated
Yes, by the Prudential Regulation Authority and Financial Conduct Authority (FRN 204479)
Protection and disputes
Financial Services Compensation Scheme and Financial Ombudsman Service
Capital
Paid-up capital and reserves of £188m at 31 December 2025 (latest published accounts).
Highest AER first, then the lower minimum deposit. Ranking rules version 1.2.0. AER shows what you'd earn in a year including any bonus. Rates can change at any time: check with the bank before you apply. Lifetime ISA rates are the provider's interest only; the government's 25% bonus is not in the AER. Lifetime ISAs, Junior ISAs and children's accounts are ranked only against their own kind, and Premium Bonds, which pay prizes rather than interest, are never ranked: see NS&I and Premium Bonds. NS&I accounts are backed by HM Treasury, not the FSCS. We list accounts held directly with the bank, not savings sold through apps and platforms such as Revolut, Trading 212 or Raisin. "Beats inflation" means the AER, and the rate after any bonus, is above CPI inflation of 3.5% (September 2026, ONS), before tax. How we rank, what we don't list and how we're paid.
