Clear answers to the money questions that come with a family, with every line of the sum on show. Free calculators, current UK rules, and nothing you type leaves your device.
For parents just over £100k whose employer offers a car scheme
Every answer comes with its working.
A number on its own asks you to take it on trust. So every result here can be turned over to show the sum behind it, line by line. Check it, follow it, and see exactly where your family is different.
Current rules2026/27 tax rates and the real rules for childcare support, Child Benefit, pensions and student loans, updated when they change.
Key scenarios, realistic numbersEach example follows a common situation, so the sums are easy to follow and easy to set against your own.
Your numbers stay yoursNo sign-up. The calculators run in your browser and nothing you type is sent anywhere.
The £100k cliff edge
+£7,120
better off this year, and £10,000 more in the pension.
A parent on £110,000, a partner on £45,000 and a child in nursery. One pension payment brings back £11,120 of childcare support.
The working
Parent A's salary
£110,000
Paid into their pension
−£10,000
Income the test sees
£100,000
Take-home given up
−£4,000
Childcare support back
+£11,120
Better off this year
+£7,120
The pension payment costs £4,000, not £10,000, because income between £100,000 and £125,140 is taxed at an effective 60%. Every step, explained.
Seven decisions, worked out for your family.
Each calculator opens with a worked scenario filled in, so you can see how it works before you type anything.