Cynergy Bank Business Savings Review (2026): Rates, Fees and Verdict
Cynergy Bank Business Savings: 3.90% AER variable (unconditional instant access) — FSCS to £120,000 under Cynergy Bank’s own banking licence. £10,000 minimum deposit.
- 3.90% AER variable instant access — unconditional, no conditions.
- FSCS-protected up to £120,000 under Cynergy Bank’s own licence.
- Notice accounts up to 4.25% AER and fixed bonds up to 4.20% AER.
Cynergy Bank pays 3.90% AER (variable) on its Business Saver instant access account with no conditions attached. No CASS switch. No monthly transfer threshold. No introductory boost that expires. That’s the deal.
That unconditional flat rate matters in practice. Allica Bank advertises up to 4.08% AER — but its base rate is 2.83%, and from month seven onwards most businesses earn 3.33% at Allica (activity boost only, CASS boost expired). Cynergy’s 3.90% beats that ongoing figure without any switching requirement.
We think that simplicity is undervalued. Cleaner and higher for most businesses.
If your business keeps £10,000 or more sitting in a current account earning nothing, Cynergy’s Business Saver is the simplest fix. The application is online, your nominated current account funds the pot, and your money starts earning from day one. The catch is the £10,000 minimum — there’s no workaround.
When you’re reviewing your quarterly cash position and realise you have £50,000 sat at 0% in your business current account, Cynergy earns you around £1,950 over six months on that balance. That’s money you’re currently leaving on the table.
Cynergy also offers notice accounts (up to 4.25% AER) and fixed-term bonds (up to 4.20% AER for 1-year) for businesses that can accept reduced liquidity for a higher rate.
All product and rate claims on this page come from cynergybank.co.uk, the FCA register, and the FSCS register, May 2026. Rates are variable — confirm current figures at cynergybank.co.uk before opening.
Cynergy Bank Business Savings at a Glance
Our Verdict
If your business has £10,000+ to save and you won’t switch your main banking to earn a higher rate, Cynergy’s flat 3.90% AER is the strongest unconditional instant-access rate in this comparison. No complexity, no conditions, no expiry dates.
If you can lock funds for 6–24 months, look at Recognise Bank’s 1-year fixed (4.20% AER, £1,000 min) or 2-year fixed (4.30%) — both beat Cynergy’s equivalent bond rates with a lower minimum deposit.
If your balance is below £10,000, Cynergy is not available to you. OakNorth Earn Vault (3.85% AER, no minimum) is the alternative.
Best For
UK businesses with £10,000+ idle in a current account that want the strongest unconditional instant-access savings rate without switching their main banking relationship. Also useful for businesses needing a high deposit ceiling — the £10,000,000 maximum on the Business Saver exceeds most challenger bank savings products.
Not Ideal For
Skip Cynergy if your savings balance is below £10,000. Also less compelling if you’re committed to Allica as your primary bank and make 15+ outbound transfers monthly with a CASS switch — Allica’s conditional 4.08% beats Cynergy in months one to six.
Key Facts
| Feature | Detail |
|---|---|
| Instant access rate | 3.90% AER variable (unconditional) |
| Notice account rate | Up to 4.25% AER variable (95, 120, 180-day) |
| Fixed-term bond rate | Up to 4.20% AER (1-year fixed) |
| Minimum deposit | £10,000 (all products) |
| Maximum deposit | £10,000,000 (Business Saver) |
| Interest payment | Monthly (instant); monthly or annual (notice) |
| FSCS protection | Up to £120,000 (Cynergy Bank Plc licence) |
| Monthly fee | No fee |
| Withdrawal fee | No fee (unlimited on Business Saver) |
| Eligible business types | Sole traders, partnerships, LLPs, limited companies |
| Conditions on instant access rate | None |
What Is Cynergy Bank Business Savings and How Does It Work?
How the Account Works
Cynergy Bank offers three business savings products. The Business Saver is instant access — withdraw at any time via online banking, no notice required.
The Business Notice Saver is available in 95-day, 120-day, and 180-day variants. You give notice via online banking and funds are released after the notice period.
The Business Fixed Rate Bond is available for 1, 2, 3, 4, and 5 years. Once opened, you cannot access funds until maturity. The rate is fixed for the full term.
How Deposits and Withdrawals Work
Your initial deposit comes from a nominated UK business current account in the exact same business name. Additional deposits and withdrawals on the Business Saver are free and unlimited via online banking.
For notice accounts: submit a withdrawal notice via online banking. Early withdrawal is not permitted — the full notice period must be served. For fixed-term bonds: no access until maturity. Verified from cynergybank.co.uk, May 2026.
How Interest Is Earned
Business Saver interest accrues daily and is credited monthly. The 3.90% AER is the variable rate as of May 2026 — Cynergy can change it with advance notice.
For notice accounts, interest accrues daily and can be paid monthly or annually — you choose at opening. For fixed-term bonds, verify the interest payment schedule at cynergybank.co.uk before applying.
Cynergy Bank Business Savings Products
Available Savings Options
| Product | Rate (AER) | Type | Min deposit | Access |
|---|---|---|---|---|
| Business Saver | 3.90% variable | Variable | £10,000 | Instant |
| Business Notice Saver (95-day) | Variable — verify | Variable | £10,000 | 95-day notice |
| Business Notice Saver (120-day) | Variable — verify | Variable | £10,000 | 120-day notice |
| Business Notice Saver (180-day) | Up to 4.25% variable | Variable | £10,000 | 180-day notice |
| Business Fixed Rate Bond (1-year) | Up to 4.20% fixed | Fixed | £10,000 | No early access |
| Business Fixed Rate Bond (2–5 year) | Verify at cynergybank.co.uk | Fixed | £10,000 | No early access |
Key Differences Between the Available Accounts
The Business Saver is the only instant access product. At 3.90% AER, it pays more than OakNorth Earn Vault (3.85%) for balances above £10,000 — no conditions on either.
The 180-day notice account (up to 4.25%) is the highest Cynergy rate but requires 6 months’ notice. We compared it against Recognise Bank’s 180-day notice (4.00%, £1,000 min): Cynergy’s 4.25% beats Recognise’s 4.00% on rate, but Recognise’s £1,000 minimum is far more accessible than Cynergy’s £10,000.
The 1-year fixed bond (up to 4.20%) matches Recognise Bank’s equivalent rate but at a much higher minimum deposit threshold.
Which Businesses Each Option May Suit
Business Saver (3.90%, instant): Any UK business with £10,000+ needing instant access and the best unconditional rate without switching banks.
180-day Notice Saver (up to 4.25%): Businesses with cash reserves that won’t be needed for at least 6 months — a tax reserve, retained profits, or a buffer fund that rarely needs touching.
1-year Fixed Bond (up to 4.20%): Businesses with £10,000+ they can commit for 12 months. Consider Recognise Bank’s 1-year fixed (4.20%, £1,000 min) if your balance is between £1,000 and £9,999.
Rates and Returns
Current Interest Rates
We verified Cynergy Bank’s savings rates from cynergybank.co.uk in May 2026. The key number for most businesses is the Business Saver: 3.90% AER variable, unconditional. No activity requirement. No plan upgrade. No switching.
On £100,000, that’s roughly £3,900 a year. On £50,000, roughly £1,950. If your business is holding reserves above £10,000 and earning nothing, you’re giving away that money every year you don’t act. The numbers are not complicated.
| Provider | Rate (AER) | Conditions |
|---|---|---|
| Cynergy Bank Business Saver | 3.90% | None |
| OakNorth Earn Vault | 3.85% | None (no minimum deposit) |
| Allica Bank Savings Pot (max) | 4.08% | CASS switch + 15+ transfers/month + £50k within 14 days |
| Allica Bank Savings Pot (ongoing) | 3.33% | Activity boost only, from month 7 |
| Tide Savings (Max plan) | Up to 3.74% | Tide Max plan required |
Fixed vs Variable Rate Structure
Business Saver and notice account rates are variable — Cynergy can change them and will notify you in advance. Fixed-term bond rates are locked for the full term.
How and When Interest Is Paid
Business Saver: daily accrual, monthly payment. Notice accounts: daily accrual, monthly or annual payment (your choice at opening). Fixed bonds: verify schedule at cynergybank.co.uk — bond term determines payment frequency.
What Can Change the Rate
Cynergy can reprice variable rates following Bank of England base rate changes. When your quarter-end VAT payment is due and you need liquidity, the Business Saver’s instant access means you can withdraw immediately — unlike a 95-day notice account where you’d wait the full period.
Fees and Charges
Account Fees
No monthly fees on any Cynergy savings product. Cynergy savings accounts are standalone — no linked current account required.
Deposit and Withdrawal Fees
Deposits and withdrawals from the Business Saver are free and unlimited via online banking. Notice account withdrawals are free after the notice period. Fixed-term bonds: no early access — there is no fee because no exit is possible.
Transfer and Transaction Fees
No transaction fees on savings account transfers. Incoming and outgoing transfers to and from your nominated UK business current account are free. Verified from cynergybank.co.uk, May 2026.
Other Charges to Watch
No hidden charges to flag on Cynergy savings accounts. The main constraint is the £10,000 minimum — not a fee, but a threshold that excludes smaller balances entirely.
Eligibility and Deposit Requirements
Who Can Open an Account
Cynergy Bank savings are available to sole traders, partnerships, LLPs, and limited companies based in the UK. Applicants must be over 18.
Your business must have a UK business current account in the exact same name as the savings application. For limited companies registered with Companies House, the application must use the registered company name. Verify current eligibility at cynergybank.co.uk before applying.
Minimum and Maximum Deposit Limits
All Cynergy savings products require a £10,000 minimum deposit. No exceptions apply on the Business Saver, notice accounts, or fixed bonds. That floor is firm — if your business has £9,500 in reserves, Cynergy isn’t open to you yet.
The Business Saver allows up to £10,000,000. For context: Allica Bank’s fixed/notice accounts cap at £2,000,000. Recognise Bank caps at £250,000. Cynergy’s ceiling is a practical advantage for larger cash holdings.
If your business is holding VAT reserves or substantial retained profits, you can park the full amount in one Cynergy account and one FSCS envelope. Useful for businesses with £500,000+ in reserves who want simplicity.
Ineligible Business Types
Cynergy Bank did not publish an explicit list of excluded business types in our May 2026 review. If you operate a charity, trust, or public sector entity, verify directly at cynergybank.co.uk before applying.
Account Access and User Experience
Online Banking and App Experience
You manage Cynergy savings via a web portal and mobile banking app. The Business Saver allows withdrawals at any time via online banking. Cynergy positions itself as a technology-led bank with a focus on ease of account management.
Managing Savings and Withdrawals
Business Saver balance: deposit and withdraw at any time via online banking. Funds transfer to your nominated UK business current account. No phone call required. No notice period.
When an invoice comes in at month-end and your current account is short, you log in, initiate the transfer from your Cynergy savings, and the money moves to your business account. Your accountant doesn’t need to know — it’s just your buffer working as intended.
For notice accounts: submit a withdrawal notice online; funds are released after the notice period. For fixed bonds: no access until maturity — plan your cash flow before committing.
How to Open an Account
You apply online at cynergybank.co.uk. Required: business details, identity verification for applicants and shareholders with 10%+ shareholding, and the nominated UK business current account in the same name. The process is described as quick. Verify current requirements at cynergybank.co.uk.
Security, Regulation and FSCS Protection
Regulation and Authorisation
Cynergy Bank Plc is authorised by the PRA and regulated by the FCA and PRA (FCA Firm Reference Number: 575105). Confirmed from the FCA register, May 2026. Verify at register.fca.org.uk before depositing.
FSCS Protection
Eligible deposits with Cynergy Bank are FSCS-protected up to £120,000 per eligible depositor. The limit rose to £120,000 on 1 December 2025 (from £85,000). Confirmed from cynergybank.co.uk and the FSCS register, May 2026.
Cynergy Bank’s FSCS coverage is under its own banking licence — independent of ClearBank. Hold funds at both Cynergy and a ClearBank-backed provider (Tide, Capital on Tap) and your protections are independent: two separate £120,000 FSCS envelopes.
Safeguarding and Security Features
Your deposits sit under full UK banking licence FSCS protection — not e-money safeguarding. Confirm current security features at cynergybank.co.uk.
Customer Reviews and Reputation
What Customers Like
We checked Cynergy Bank’s Trustpilot profile in May 2026: 4.4 stars from 5,640 reviews. That volume matters — 5,640 reviews provides a representative sample that smaller specialist banks can’t match (Redwood: 40 reviews; Recognise: 681). Positive reviews reference competitive savings rates, online banking ease, and responsive service.
Common Complaints
We identified some reviews citing customer service wait times and account opening delays in our May 2026 review. No widespread complaints about savings rate accuracy or withdrawal issues were found.
Customer Support and Service
Support Channels and Availability
Cynergy Bank provides phone and online support for savings customers. No dedicated relationship manager is assigned per customer (unlike Allica Bank). Verify current support hours and contact details at cynergybank.co.uk.
Help Centre and Self-Service Resources
Your first port of call for operational questions is cynergybank.co.uk. The online banking platform lets you manage deposits, withdrawals, and notice submissions without calling support.
Cynergy Bank Business Savings vs Alternatives
Cynergy vs Allica Bank Business Savings
Cynergy: 3.90% AER instant access, unconditional. Allica: up to 4.08% AER instant access — base rate 2.83%, reaching 4.08% requires CASS switch, 15+ monthly transfers, £50,000 deposit within 14 days.
We compared the ongoing rates for a business that makes 15+ monthly transfers but won’t CASS switch: Allica earns 3.33% (activity boost only, month 7+). Cynergy earns 3.90% — unconditional, ongoing. On £200,000: Cynergy earns £7,800/year; Allica earns £6,660/year. That’s £1,140 more at Cynergy without any switching cost.
FSCS: both independent banking licences. You can hold £120,000 at each — two separate FSCS envelopes, not a shared limit. That stacking strategy matters for larger deposits.
Allica Instant Access Business Savings Pot
Cynergy vs OakNorth Business Savings
OakNorth Earn Vault: 3.85% AER (no conditions, no minimum). Withdrawals before 8:00am are processed same-day. Cynergy Business Saver: 3.90% AER, £10,000 minimum. Rate difference: 0.05% — £50/year per £100,000.
If your balance is under £10,000: OakNorth. If your balance is £10,000+: Cynergy pays marginally more. Both carry independent FSCS envelopes under their own banking licences.
Cynergy vs Aldermore Business Savings
Aldermore business savings offers competitive fixed-term options. We compared Aldermore and Cynergy for businesses prioritising fixed-term returns. Verify Aldermore’s current rates at aldermore.co.uk — fixed-term rates change and the comparison depends on current pricing.
Aldermore Business Savings
Final Verdict: Is Cynergy Bank Business Savings Worth It?
For businesses with £10,000+ that want the best unconditional instant-access rate without switching banks: yes. Cynergy’s 3.90% AER with no conditions is the cleanest high-rate instant access option in this comparison.
The £10,000 minimum is the only barrier. Under that threshold, use OakNorth (3.85%, no minimum). Over £10,000 and wanting the highest ongoing unconditional rate: Cynergy.
For fixed-term savings, Recognise Bank’s 2-year fixed at 4.30% AER (£1,000 min) beats Cynergy on both rate and minimum deposit. For instant access with the best unconditional rate: Cynergy wins above £10,000.
Verify the current 3.90% AER at cynergybank.co.uk before opening — variable rates change, and this figure is from May 2026.
Frequently Asked Questions
What is Cynergy Bank’s business savings interest rate?
Cynergy Bank’s Business Saver (instant access) pays 3.90% AER variable as of May 2026, verified from cynergybank.co.uk. This rate is unconditional — no CASS switch, no transfer threshold required. Notice accounts pay up to 4.25% AER variable. Fixed-term bonds pay up to 4.20% AER (1-year fixed). Rates are variable (except fixed bonds) and can change — confirm at cynergybank.co.uk before opening.
Is Cynergy Bank business savings FSCS protected?
Yes. Eligible deposits are FSCS-protected up to £120,000 per eligible depositor under Cynergy Bank Plc’s own banking licence (FCA FRN: 575105). This limit was raised to £120,000 on 1 December 2025 (previously £85,000). The protection is independent of ClearBank. Verified from the FSCS register and cynergybank.co.uk, May 2026.
What is the minimum deposit for Cynergy Bank business savings?
£10,000 for all Cynergy Bank savings products: the Business Saver, all notice account variants, and all fixed-term bonds. There are no exceptions. If your available savings balance is under £10,000, OakNorth Earn Vault (3.85% AER, no minimum deposit) is the closest comparable alternative.
Can sole traders open a Cynergy Bank business savings account?
Yes. Cynergy Bank explicitly accepts sole traders for business savings. Verified from cynergybank.co.uk, May 2026. Applicants must be over 18 and have a UK business current account in the same business name. Verify current eligibility criteria at cynergybank.co.uk before applying.
Is Cynergy Bank’s 3.90% AER rate conditional?
No. Cynergy Bank’s Business Saver pays 3.90% AER variable with no conditions — no CASS switch required, no monthly transfer threshold, no minimum monthly deposit. This is the flat variable rate as of May 2026. By contrast, Allica Bank’s maximum rate of 4.08% AER requires a CASS switch, 15+ monthly transfers, and a £50,000 deposit within 14 days of opening. Allica’s base rate (no conditions) is 2.83% AER.
Can I access my money instantly with Cynergy Bank business savings?
For the Business Saver (instant access): yes — withdrawals can be made at any time via online banking, no notice required. For notice accounts: no — you must give 95, 120, or 180 days’ notice. For fixed-term bonds: no — funds cannot be accessed until maturity. Verified from cynergybank.co.uk, May 2026.
We reviewed Cynergy Bank’s business savings products by checking current rates, product terms, fee schedules, and eligibility criteria directly from cynergybank.co.uk in May 2026.
We confirmed Cynergy Bank’s FCA registration (FRN 575105) and FSCS registration from the FCA register and FSCS website in May 2026. FSCS limit of £120,000 reflects the increase effective 1 December 2025.
We verified competitor rates for Allica Bank, OakNorth, Recognise Bank, and Aldermore from each provider’s primary website in May 2026. All variable rates can change; confirm before opening.
Deep Research was used alongside primary source verification. Where specific notice account rates by term were not individually confirmed, we have stated the upper range (4.25%) rather than individual term rates. We did not use comparison site summaries as the basis for product claims.
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