April 5 isn't just when your tax year resets and your ISA allowance renews. It's the perfect moment to step back and ask yourself: Is my banking strategy actually working?
If you've been switching banks, stoozing on 0% cards, and squirreling money into regular savers, you might have a vague sense you're earning "a decent bit." But here's the thing most people never do: they actually calculate it. So you end up with multiple accounts, money scattered everywhere, and zero idea whether you should keep doing this or change tactics.
This article walks you through a complete banking stack audit. By the end, you'll know exactly how much you've earned, where it's coming from, and where to focus your effort for the next quarter.
Why Audit Now?
There are three brilliant reasons to audit your strategy in late April:
1. You've just reset. After April 5, your tax year is fresh. Your new ISA allowance is unlocked. It's the ideal checkpoint before you commit to another 12 months of tactics.
2. You're halfway through switching seasons. If you've been active since January, you've likely started some switches, hit cooling-off periods, and maybe earned your first bonuses. You have real data to work with.
3. Interest rates have stabilised. By late April, the banking market has settled into its Q2 pattern. The chaos of Easter and the tax year is over. You can see which rates actually stick around.
An audit forces you to ask hard questions: Is stoozing still worth your time? Have my switching bonuses dried up? Are those regular savers actually beating inflation? Should I do more of something, less of something else?
The Audit Framework: Four Buckets
Your banking income comes from four sources. Let's calculate each one.
Bucket 1: Switching Bonuses
Start with how many switches you've completed since January 1, 2025 (or whenever you started tracking).
Write down:
- Each bank you switched to
- The bonus amount you received
- The date you received it
- Any conditions (like minimum direct debit, balance requirement)
For example:
- NatWest: £1,250 (received 15 Feb)
- First Direct: £175 (received 2 March)
- Halifax: £125 (received 18 April)
If you've switched to three banks this year, you're looking at roughly £1,550 in pure bonus income (though your actual amount depends on which banks offered what when).
Calculate your switching bonus income so far in 2025: ___________
How many switches are you currently in the cooling-off period for? Write down the dates when you can safely do your next switch without overlapping cooling-off rules. (If cooling-off periods confuse you, check our complete guide.)
Bucket 2: Stoozing Returns
This one requires honest maths, because stoozing's profitability isn't obvious.
Start with: How much money are you currently holding on 0% credit cards?
Let's say you have £8,000 across two 0% cards, each with a 0% period lasting 24 months (ending April 2027).
You're earning that £8,000 in a savings account or money market fund. Let's assume you found a decent home for it earning 4.5% annual interest (realistic in April 2025 if you hunt).
Your annual stoozing return = £8,000 × 4.5% = £360 per year.
But here's the catch: You're only a year into a 24-month card. In April 2026, when this card reverts to a standard rate (likely 18–20%), you'll need to do something: pay it off, or move it to another 0% card. That's a switching cost in terms of time and risk.
Stoozing works best when you have a long runway (your interest earnings outpace the stress and effort). If you're close to the end of a 0% period and haven't got a backup plan, you're about to earn precisely £0.
Calculate your current stoozing income: (Money on 0% cards) × (Interest rate on your savings) = ___________ per year.
Audit question: How many of your 0% cards expire in the next 12 months? Do you have a plan for each one? If not, stoozing might be adding stress without proportional return.
Bucket 3: Regular Saver Accounts
If you're squirreling £200–£500 a month into regular savers, write down:
- Bank name
- Monthly contribution
- Headline rate (e.g., 6.5%)
- Actual rate (some banks tier it; a few charge fees)
- Months left until you complete it
Regular savers are brilliant because the rate is guaranteed. Unlike switching bonuses (one-off) or stoozing (which depends on interest rates and card availability), a regular saver is math you can depend on.
Let's say you've got:
- Santander Regular Saver: £250/month at 4% = £10 per month, £120 per year
- First Direct Regular Saver: £300/month at 5% = £15 per month, £180 per year
Calculate your regular saver income: ___________ per year (once accounts complete).
Audit question: Are you actually making the contributions? This is where people fall short. You open a regular saver, get excited about the rate, then skip months because you spent the money. Be honest: can you sustain these contributions?
Bucket 4: Interest on Current Accounts
Some current accounts still pay interest on your balance. It's rare now, but if you're sitting on £2,000–£5,000 in a current account paying 2–3%, that's real money.
- Account name
- Interest rate
- Balance
- Annual interest = Balance × Rate
Example: You've got £3,000 in a current account paying 2.5% = £75 per year.
Calculate current account interest income: ___________ per year.
Audit question: Are you maximising this? If your main current account pays 0%, but you have money sitting there, move it to a high-interest account or regular saver. Even 1% more is 1% more than zero.
Your Total Banking Income: April 2025 Snapshot
Add them up:
- Switching bonuses (Jan–April): £_________
- Stoozing returns (projected): £_________
- Regular savers (projected): £_________
- Current account interest (projected): £_________
Total projected annual banking income: £_________
Now ask: Is this enough to justify your effort? If you've earned £1,550 in bonuses, projected £360 in stoozing, £300 in regular savers, and £75 in interest—that's £2,285 total—and you've spent 10 hours opening accounts, tracking cooling-off periods, and managing multiple banks, that's roughly £230 per hour. Not bad.
But if you've earned only £500 in bonuses and your stoozing is messy, maybe you're getting £50 per hour. In that case, you might want to shift effort.
The Rebalancing Questions
Once you've audited, ask:
1. What's my highest-return strategy right now?
If switching bonuses are your big earner (and they usually are), you should be focusing on eligible banks and managing cooling-off periods tightly. That's where the money is.
If you're earning mainly from interest and savers, you're in a more stable (but slower-growing) phase. That's fine—it's less stressful—but you might be leaving money on the table.
2. Do I have any dead weight?
If you've opened a regular saver but can't fund it, close it and move the effort elsewhere. If you're holding £2,000 on a 0% card earning 1% when you could earn 4% in a savings account, move it (and pocket the difference).
3. What's expiring or changing?
- Which 0% cards end their 0% period in the next 6 months? You need a plan.
- Are any switching bonuses about to clear? (Usually 30–60 days after switching; if you've hit cooling-off, when can you move money?)
- Are your regular savers completing soon? Should you restart them, or switch to a different account type?
4. How much time am I actually spending?
Track it honestly for one month. If you're spending 15 hours a month managing accounts for £190 in returns, that's only £12–13/hour—worse than a part-time job. You might prefer to simplify and accept lower returns for less stress.
Conversely, if you're spending 3 hours a month and earning £190, that's exceptional value.
Common Questions
I've only been doing this since January. Should I audit already?
Yes, absolutely. You have real data now. You can see which strategies are working and which ones feel like a slog. Early adjustments save a lot of wasted time.
Do bonuses count as income for tax purposes?
Bank switching bonuses are not taxable (they're gifts from the bank, technically). However, interest from stoozing, regular savers, and current account interest IS taxable if it exceeds £1,000 (£500 for higher-rate taxpayers). Make sure you've declared it.
What if my audit shows I'm only earning £500 a year?
That's still worthwhile—it's free money. But it means you should focus on low-effort strategies. Open switches when they align naturally with your banking needs anyway. Use regular savers because you like the discipline, not because you're chasing returns. Drop stoozing if it stresses you.
Should I close some of my bank accounts to simplify?
Not during cooling-off periods. But after cooling-off ends, yes, close accounts you're not using. Multiple open accounts can hurt your credit score and clutter your life. Keep only what you're actively using or planning to use.
I have accounts earning different rates. Should I move money around?
Yes, if the effort is worth it. If you have £1,000 earning 1% in a current account and you could move it to a 4% savings account, that's £30 extra per year for 20 minutes of work. But if rates are only 0.1% apart and you'd need to pay a transfer fee, it's not worth it.
Can I audit quarterly?
You can, but annually (April to April) is probably enough unless you're doing very heavy switching. Quarterly audits risk over-optimisation—you'll spend more time adjusting than earning.
The point of an audit is not to optimize obsessively; it's to make sure you're not wasting time on something that isn't paying off. Some banking strategies feel fun and challenging (especially switching). Others feel tedious (tracking multiple accounts). An audit helps you decide which trade-offs are worth it.
Check your live offers page to see which switches are available now, and use our eligibility checker to see what you qualify for before you commit to your next move.