A useful cat budget has four parts: setup purchases, regular spending, annual bills and irregular costs. Keep them separate, then turn the recurring items into a monthly planning figure. Leave unknown costs visible until you have a quote.
What published estimates can tell you
PDSA estimates £366 for setup and at least £79 a month, but its page explicitly says the prices were calculated in 2024. Checked on 7 September 2026, those are still historical figures, not a fresh 2026 basket. PDSA excludes buying or adopting the cat, illness or injury vet fees, boarding or sitting, and special diets from those estimates.
Use that as context for the kinds of costs involved. For your own forecast, use the things you need, current prices and local quotes. An old national estimate cannot tell you what your next vet bill will be.
Separate the first shopping trip
Start with the first-cat essentials checklist. For every item, record quantity, price, whether you already have it and any delivery charge. Add the adoption or purchase cost separately, and ask which initial care costs have already been covered.
Here is a deliberately small retail snapshot showing how quantity changes a basket. These are listed prices checked on 7 September 2026, not a complete setup, a checkout quote or tested recommendations.
| Item | Quantity | Each | Subtotal |
|---|---|---|---|
| Pets at Home Stainless Steel Meow Bowl, 15cm | 2 | £3.50 | £7.00 |
| Pets at Home Cat Litter Scoop Single | 1 | £1.00 | £1.00 |
| Accessories subtotal | £8.00 |
Delivery is excluded; availability and prices can change. Trays, carrier, scratcher, bedding, toys, food, litter and care costs are not included. The small subtotal is useful only with those omissions attached.
Build the monthly plan
| Category | What to record | Monthly treatment |
|---|---|---|
| Food and litter | Price and actual quantity used | Estimate use over a representative period |
| Routine care | Your vet’s plan and prices | Annual amount ÷ 12, unless paid monthly |
| Insurance, if purchased | Your quote and payment basis | Record the actual payment; review at renewal |
| Replacement equipment | Likely items and your allowance | Planned annual allowance ÷ 12 |
| Sitting or boarding | Local quote × planned days | Annual plan ÷ 12 |
| Unplanned costs | Unresolved exposure and your provision | Keep separate from predictable bills |
Check for overlaps: if a paid care plan includes a particular service, do not also count that service as a separate annual payment. An insurance premium is not evidence that every possible bill is covered; use the actual policy terms when recording what remains your responsibility. This guide does not recommend a policy or a universal reserve amount.
A worked planning example
Entirely assumed figures: £45 regular monthly purchases + £240 annual routine spending ÷ 12 + £120 annual replacement allowance ÷ 12 = £75 a month.
That is a calculation example, not a recommended budget or an estimate of adequate care. It excludes insurance, unplanned treatment, sitting and setup. Add your own amounts before treating the total as a household plan.
Keep a second column for when payments actually fall due. Saving £20 a month towards a £240 annual bill does not make that bill payable in £20 instalments. The distinction tends to become quite clear on payment day.
Replace assumptions as you learn
Date each price and quote. After the first full month, compare the plan with receipts and stock remaining. Use our litter cost method for a clearer consumption estimate, and keep missing information marked “unknown”.
Revise the plan after a price change, a care change or a new household routine. A useful budget is allowed to change its mind when the receipts arrive.
Explore costs and buying for more considered purchases.
Research guide · Sources checked 7 September 2026. Product examples illustrate the decision; they are not hands-on reviews. How we work.