A spending plan works when it’s simple enough to stick to. Start by knowing your monthly income after tax, list your essentials, decide what to save before you spend, and give the rest a job. The aim isn’t to cut everything — it’s to spend on purpose, so the money lasts the month.
What is a spending plan (and how is it different from a budget)?
Because they’re built like a diet — too strict, too detailed, and impossible to keep up. You track 40 categories for two weeks, miss a day, feel like you’ve failed, and quietly give up.
A spending plan is different. It’s not about saying no to everything. It’s about deciding where your money goes on purpose, so the stuff you actually care about gets funded and the leaks don’t.
How to build your spending plan, step by step
- Add up your income. What actually lands in your account each month after tax — including any regular side income. Use the real number, not the optimistic one.
- List your fixed bills. Rent, council tax, energy, broadband, phone, insurance, subscriptions, minimum debt payments. These are the non-negotiables that go out every month.
- Pay your future self next. Before you get to spending, set aside something for savings and for clearing debt. Even a small amount, automated on payday, counts.
- What’s left is your spending money. Whatever remains after bills, savings and debt is yours to spend — guilt-free. This is the bit that makes the plan survivable.
That’s the whole structure: income → bills → savings & debt → guilt-free spending. It fits on a phone screen, which is exactly the point.
What about the 50/30/20 rule?
The 50/30/20 rule says: 50% on needs, 30% on wants, 20% on savings and debt. It’s a useful starting sketch — but on a lot of UK salaries, especially with today’s rents, “needs” eat far more than 50%. Don’t force your life to fit the percentages. Use them as a rough compass, then build the real plan around your actual numbers.
How do I cut spending without feeling miserable?
Here’s the cut most budgets get wrong: they slash the small joys (the coffee, the one streaming service you love) and leave the big silent drains untouched. Flip it.
Protect your “values spend” — the few things that genuinely make your life better. Then go hunting for the leaks you won’t even miss: the £9.99 you forgot you signed up to, the renewal that crept up £30, the lunches you didn’t actually enjoy. That’s where the painless money is.
Want to see where your money’s actually going? Grab the free Income & Expenditure Tracker.
Want it built around your numbers, with someone in your corner? That’s what the M&G Financial Control Reset is for.
How do I stick to it? The 15-minute monthly check-in
Once a month, give yourself a 15-minute money check-in. Open your accounts, compare the month to your plan, tweak, and move on. That’s it. A plan you review for 15 minutes a month beats a perfect spreadsheet you abandon by week two.
A spending plan is step two of the M&G System. Once it’s running and you can see your leaks, the next move is clearing any bad debt for good.
Want to see where your money’s actually going? Grab the free Income & Expenditure Tracker.
Want it built around your numbers, with someone in your corner? That’s what the M&G Financial Control Reset is for.
Frequently asked questions
How much should I save each month?
Start with whatever you can sustain — even £25 a month builds the habit. As your leaks shrink, nudge it up. Consistency matters far more than the amount at the start.
Should I budget weekly or monthly?
Monthly works best for most people, because most bills are monthly. If money feels tight, breaking your guilt-free spending into a weekly amount can make it easier to pace.
What’s the best budgeting app in the UK?
The best one is the one you’ll actually open. Many UK banking apps now categorise spending for you, which is plenty to start. A simple note or spreadsheet works just as well — don’t let “finding the perfect app” become another reason to put it off.
Your next step
If you’d like a plan built around your numbers — with someone in your corner to keep you on track — the M&G Financial Control Reset is a five-session, one-to-one programme, £297 flat fee. Work with me →
Money & Growth 101 is plain-English personal finance for your 20s and 30s — no jargon, no shame, just a clear next step.
What’s the difference between a budget and a spending plan?
Same idea — a spending plan just sounds less restrictive. It’s a plan for where your money goes before it disappears.
What budgeting rule should I use?
A simple split works for most people, but the best plan is one you’ll actually follow. Start simple and adjust.
How often should I review my spending plan?
A 15-minute check once a month is enough to keep it on track.
Get the next guide in your inbox
Plain-English money tips, no spam. Pop your email in:
Mustafa Alsoodany is the founder of Money & Growth 101. By day he’s worked in financial crime and compliance at banks and fintechs — JPMorgan, Monzo, Starling and Barclaycard among them — and holds the ICA Advanced Certificate in Anti-Money Laundering at Distinction. He started Money & Growth 101 to do the opposite of the day job: make money plain, jargon-free and genuinely doable for people in their 20s and 30s who were never taught it.