The timing of this rate increase has an almost theatrical quality. The Treasury-backed organisation has chosen to launch the largest rate increase on its fixed-term bonds since January, just weeks after NS&I acknowledged that it had lost track of almost £500 million that belonged to regular savers. To read between the lines, you don’t need a degree in finance. This seems more like a brand attempting to remind consumers why it was important in the first place than a standard market adjustment.
The numbers are powerful in and of themselves. The two-year Guaranteed Growth Bond now pays 4.48% AER, while the one-year bond now pays 4.50%, up from 4.07%. Options for three and five years come next, at 4.45% and 4.40%, respectively. The Investment Account more than doubles to 2.05% after years of quietly underperforming at a flat 1%. These increases land with unusual confidence for an organisation that has been sitting awkwardly in the middle of the comparison tables for the majority of the previous year.
| Detail | Information |
|---|---|
| Institution | National Savings and Investments (NS&I) |
| Backed By | HM Treasury, United Kingdom |
| Capital Security | 100% government-guaranteed |
| Announcement Date | 28 April 2026 |
| 1-Year Bond Rate | 4.50% AER (up from 4.07%) |
| 2-Year Bond Rate | 4.48% AER (up from 3.98%) |
| 3-Year Bond Rate | 4.45% AER (up from 4.02%) |
| 5-Year Bond Rate | 4.40% AER (up from 4.05%) |
| Green Savings Bond (3-yr) | 3.82% AER |
| Minimum Investment | £500 |
| Maximum Investment | £1 million per person |
| Net Financing Target | £15 billion (current financial year) |
| Withdrawal Terms | No early access permitted |
| Investment Account Rate | 2.05% gross/AER (up from 1%) |
| Recent Controversy | £500m of customer savings reportedly mislaid |
| Former Chief Executive | Dax Harkins (resigned) |
It’s difficult to ignore how rapidly the atmosphere surrounding NS&I has changed. A few months ago, the main topics of discussion were withheld Premium Bond prizes, delayed payments to grieving families, and a departing CEO. The same organisation is now putting itself in proximity to the market leaders. The rates were described as “fairly punchy” by Sarah Coles at AJ Bell, and that seems about right. Although they’re not the best on the high street—Market Harborough Building Society leads the five-year category at 4.7%, and MBNA still leads the one-year market at 4.66%—they’re close enough that savers will take notice.
Of course, there is a deeper reason for the relocation. This year, NS&I has set a net financing target of £15 billion, which is a significant challenge. The bank must persuade savers that it is worthwhile to choose it over a small building society in the Midlands that they are unfamiliar with, and the Treasury needs the money. The 100% government guarantee becomes its silent selling point in this situation. NS&I is still one of the few places for someone with a sizable nest egg that is above the £85,000 FSCS protection limit to park large sums without dividing deposits among several providers.
It has been a strange experience to watch the savings market over the last eighteen months. As the Bank of England loosened policy, rates were expected to gradually decline, but the Middle East conflict and unyielding inflation expectations have made the situation more complicated than anyone had anticipated. Institutions appear to be preparing for higher-for-longer conditions as the next interest rate decision is due on Thursday. Therefore, the timing of NS&I is not coincidental. Before the policy direction solidifies, lock in deposits now.
It remains to be seen if savers will overlook the recent errors. Rebuilding trust in financial institutions usually takes time. Due to the Premium Bond prize fund rate’s decline to 3.3%, some devoted clients have already been persuaded to look for better-yielding products elsewhere. Some of them could be pulled back by a 4.50% one-year bond. Perhaps it won’t. A national savings provider that was once a mainstay of British financial life now has to compete so fiercely for attention, which is somewhat bittersweet.
However, the math has actually changed for anyone considering where to put a lump sum this spring. Although the bonds aren’t the best available, they are reputable, safe, and backed by the government. That combination is sufficient in certain situations.
