August bank statements are sitting in your inbox. September's almost here. This is the perfect moment to pause, take stock of what you've actually earned, and figure out what's worth doing for the rest of the year.
Most people don't do this. They keep switching because the momentum is there, or they stooze because they're already stoozing, without asking whether it's still paying rent. By October, they're neck-deep in accounts that stopped being profitable three months ago.
Let's not be most people.
A proper banking audit takes about 90 minutes. You'll find money left on the table, accounts you've completely forgotten about, and the stuff that's genuinely worth your time through to December. Then you can plan Q4 with actual numbers, not hope.
Part 1: Review What You've Built So Far
Start here: open your bank statements from January through August. Don't worry about the detail yet — just list what you've got running right now.
Your current accounts. Write down every current account you're using. Note how long you've held it, whether you've got a bonus due (and when), how much is sitting in it (active stoozing balance versus emergency money versus dead money), and what direct debits are set up there. Salary payments, bills, subscriptions — everything.
Your stoozing cards. List every 0% balance transfer or 0% purchase card you're running. For each one, note the interest-free period remaining, current balance, how much interest you're earning per month from it (if you know it), and when the card expires. This should take 15 minutes, but don't skip it. If you've forgotten you own a card, you've definitely forgotten whether it's still working for you.
Your regular savers. If you're using dedicated regular saver accounts, list the monthly deposit amount, headline rate, months completed versus remaining, and when each one matures.
Your ISA. Check how much you've paid in so far this tax year. The annual allowance is £20,000, and it resets April 6th each year. If you're close to the limit or haven't used your allowance yet, this changes what you can do in Q4.
Once you've got this list, you'll see the full picture of what you've built. Move to the second part.
Part 2: Find the Deadwood (and Kill It)
Now you're going to be ruthless. Every account on your list has to earn its place in your life, or it's getting the chop.
Dead switch accounts. You switched to a bank seven months ago, got the bonus, and now the account sits there with £23 in it. There's no bonus period left, no offer, no reason to keep it running. Close it or downgrade it if the bank offers a no-frills version. You'll free up mental overhead and reduce direct debit complexity.
Use the switching guide to close properly — make sure your direct debits are actually moved first — but get them gone. Don't let inertia create clutter.
Cards past their peak. A 0% card with two months left on the interest-free period and £0 balance isn't earning you anything, and it's cluttering your credit file. You don't have to use it up to its zero date; you can close it now and apply for the next card. If it's a 0% card you're actually using for stoozing, keep it. If it's an old 0% purchase card you grabbed six months ago and never touched, close it. Be honest about what's actually active.
Savers that aren't competitive. If you've got a regular saver paying 3% and there's a new one available at 4.5%, don't wait for yours to mature. Close the old one (check early exit terms), and start the new one next month. The difference is real — on a £500 monthly deposit, that's an extra £60+ per year.
Credit cards you're not using. Even if they're not stoozing cards, old credit cards sitting unused are a drag on your credit score. Each open account slightly lowers your approval odds for new ones. Close the cards you're genuinely not using anymore.
The goal here is clarity. You should know exactly what's working and what isn't. No ghost accounts. No "I think that card might be useful later." Clarity makes planning easier, and it makes your life simpler.
Part 3: Look at Your Actual Earnings
Here's the moment most people skip, and it's the most important one.
Add up everything you've earned since January. Not estimates. Real money that's actually hit your bank account: bank switching bonuses paid into accounts, stoozing interest if you're tracking it separately, regular saver interest, any other banking income. Get the stoozing calculator if you need to work backwards from interest earned — it'll show you what you've genuinely been earning.
Now divide by 8 (the months so far). That's your average monthly earnings from banking.
Multiply by 4 to project to year-end.
That number is important. If you're on track for £600 for the year, switching isn't saving you much time right now — you might be better off focusing on regular savers, which need less oversight and more consistency. If you're on a £2,400 run rate, you know Q4 is worth your attention. This isn't judgment; it's triage.
Be honest here. If you've been putting in 10 hours a month and earning £100, that's £10 per hour. You're probably better off with a different strategy or no strategy at all. If you've been putting in 2 hours a month and earning £300, keep going — that's £150 per hour of actual work.
Part 4: Plan Q4 with Actual Timing
Here's where strategy meets reality.
Q4 offers are usually strongest in September and November. October tends to be quiet. By December, most banks are clearing old offers to make room for January's big push. This means your switch strategy should look different from earlier in the year.
Check current offers and see what's actually available. No point planning to switch to banks with nothing on the table. Banks move their offers around, and by late summer some are definitely running empty.
If there are decent Q4 bonuses available, work backwards from their requirements. How long do you need to hold the account? What's the minimum salary transfer? When's the latest possible switch date that still lets you hit the bonus deadline? Ideally, your Q4 switches should time so bonuses land in early January — or just before if that's allowed — keeping money flowing into the new tax year and setting you up for H1 2027.
If Q4 offers are thin, ask yourself honestly: is it worth switching just to switch? The answer for most people is no. The switching sweet spot means waiting for banks worth your time, not jumping at every mediocre offer that crosses your desk.
ISA strategy. If you've got ISA allowance left, you can still use it through December 5th (the last date for 2026 subscriptions to count in this tax year). After April 6th, 2027, you get fresh allowance. This means if you're currently hitting your £20,000 limit, you're done for the year. Don't open a 2026/27 ISA until April 6th.
Tax-year thinking. The tax year ends April 5th, 2027. That's eight months away. Any stoozing interest you've earned counts as income for this tax year. Once you hit your personal savings allowance — which depends on your income bracket — everything else gets taxed. Know what your limit is, and know where you are against it. If you're a basic-rate taxpayer, you've got £1,000 tax-free interest allowance before HMRC gets involved.
Part 5: Optimise What's Already Running
The best income is income you're not fighting for. Look at your existing setup and think about friction.
Direct debits. If you're spreading switches across multiple accounts, make sure all your direct debits are actually active where they should be. A switched account with no direct debits is dead weight. The direct debit guide walks through this, but the practical point is: every account you're counting as active should have at least one recurring payment hitting it each month. This keeps it active in the bank's eyes and often helps with bonus eligibility.
Stoozing money. How much have you got on 0% cards right now? Compare that to your emergency fund. If you're stoozing more than you should be, the risk isn't worth the interest. If you're being too cautious, there's free money on the table. The psychology here matters as much as the maths. You need to sleep at night.
Automation. Are you manually logging into accounts to check interest? Stop. Set up reminders for bonus dates and card expiries. If you've forgotten about the system, the system's too complicated.
Common Questions
When should I close old accounts after switching?
Once the bonus has cleared and you've moved all direct debits, you can close immediately. Don't wait for the account to age. Some banks offer downgrade options (zero-fee accounts) if you want to keep the account for credit history reasons, but if it's truly dead, closing is cleaner.
Is there a point where I've done too many switches?
Yes. After about 5-6 switches in a year, banks get cautious. After 10 in two years, you're on the "switcher" list and rejections increase sharply. That said, if you're earning £3+ per switch on average, it's worth being strategic rather than stopping. Focus on quality over quantity.
Should I close old stoozing cards or keep them open for credit history?
If you've paid off a 0% card and the interest-free period is over, close it. Keeping open cards you're not using doesn't help credit history as much as people think. Each open card slightly lowers your approval odds for new ones. Close the deadweight.
Can I move money between my own accounts if I'm stoozing?
Yes, transfers between your own accounts don't count as charges — you're just moving your money. This is useful for consolidating back to one account before closing dormant ones, or moving stoozing balance between cards.
What if I've earned nothing so far and Q4 offers look bad?
Then Q4 might be the time to stop switching and focus on what you've got. Build an emergency fund if you haven't already. Here's what to do with £5,000 if you need a reset. Banking income is only worth it if you're not adding stress to your life.
The September audit is the easiest money you'll make this year. One 90-minute session, and you'll either confirm your strategy is working, or find out it's time to simplify.
Either way, you'll know. And that clarity is worth more than the bonuses themselves.