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UK 50/30/20 budget calculator

Split your monthly take-home pay with the 50/30/20 rule — 50% needs, 30% wants, 20% savings and debt — then compare the targets against what you actually spend to find your real savings rate.

By Mitch Duncan Last reviewed Methodology

Your monthly money

What you actually spend (optional)

The 50/30/20 rule uses take-home pay after tax. "Needs" are essentials you can't skip; "wants" are lifestyle choices; the final 20% covers saving, investing, and any debt payments beyond the minimum.

Needs · 50%
£2,000.00
Wants · 30%
£1,200.00
Savings & debt · 20%
£800.00
Next step
Paycheck calculatorGross to net take-homeRead the guideThe 50/30/20 Budget Rule, Explained
Want the full picture? The 50/30/20 Budget Rule, Explained →

How the 50/30/20 rule works

The 50/30/20 rule divides your take-home pay — the money that actually lands in your account after tax — into three buckets: half to needs, 30% to wants, and 20% to savings and extra debt payments. It's popular because it's easy to remember and flexible enough to fit most incomes without tracking every coffee.

What goes in each bucket

Worked example

On $4,000 take-home a month, the targets are $2,000 for needs, $1,200 for wants, and $800 for savings. If your rent and bills already run to $2,400, you're over the needs line — a signal to trim fixed costs or borrow from the wants share rather than from savings.

When to bend the rule

In high-cost cities, needs often exceed 50% — that's normal, and the rule still helps by capping wants so savings survive. If you're paying down high-interest debt or chasing financial independence, tilting toward more savings gets you there faster. The point isn't the exact percentages; it's making sure the share for your future actually happens.

Turn the savings share into a plan with the savings goal calculator, and check your starting point with the net worth tracker.

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Frequently asked questions

Does the 50/30/20 rule use gross or net income?
Net — your take-home pay after tax and any pre-tax deductions like retirement contributions or health insurance. Using gross income would overstate what you can actually spend. If retirement contributions already come out of your pay before you receive it, they count toward the savings goal, so you may need less of the 20% bucket.
What if my needs are more than 50% of my pay?
That's common in high-cost areas. The rule is a guide, not a law. If essentials exceed 50%, cap your wants tightly so the savings bucket survives, and look for ways to lower fixed costs over time. Protecting the savings share matters more than hitting the exact percentages.
Is 50/30/20 good for paying off debt?
Minimum debt payments count as needs; anything extra goes in the 20% savings-and-debt bucket. If you're tackling high-interest debt, many people temporarily shift more toward that bucket — say 50/20/30 — to clear it faster, then return to the standard split once the debt is gone.

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