Castration of a male cat runs USD 60 to 200, GBP 45 to 160, or CNY 300 to 1,200. Spay of a female cat runs USD 200 to 600, GBP 150 to 450, or CNY 800 to 3,000. The 3 to 4 times gap is not a markup: it is 10 minutes of surgery against 30, 1 small incision against 1 abdominal entry, and a recovery that runs 2 days against 10. Every number below shifts 1.5 to 3 times with city and hospital level.
What each price actually includes
A 60 castration usually covers pre-medication, short general anesthesia, the scrotal incision, 1 or 2 skin sutures or none at all, and a take-home pain dose. A 200 to 600 spay covers the same plus an abdominal approach, ligatures on the ovarian pedicle and uterus, 3 layers of closure, 30 to 45 minutes of monitoring, and a recovery cage for 3 to 6 hours. The spay quote often hides 3 extra items: an IV catheter, a fluid bag, and an abdominal drape pack.
Both ends of each range are real. A municipal or high-volume clinic does a cat spay for 200 because it runs 8 to 12 procedures a day; a 24 hour hospital in a capital city quotes 600 for the same surgery with 1 nurse assigned to the patient.
US, UK, and China price bands
| Procedure | US (USD) | UK (GBP) | China (CNY) |
|---|---|---|---|
| Male cat castration | 60 to 200 | 45 to 160 | 300 to 1,200 |
| Female cat spay | 200 to 600 | 150 to 450 | 800 to 3,000 |
| Male dog, under 10 kg | 150 to 400 | 120 to 320 | 600 to 1,800 |
| Female dog, under 10 kg | 300 to 800 | 250 to 650 | 1,200 to 3,500 |
| Retained testicle, add-on | plus 30 to 60% | plus 30 to 60% | plus 30 to 60% |
| In heat or pregnant, add-on | plus 20 to 40% | plus 20 to 40% | plus 20 to 40% |
Read the columns as medians, not quotes. The US column is a suburban general practice, the UK column a first-opinion practice outside London, the China column a tier-2 city private clinic. A tier-1 Chinese city, inner London, or Manhattan moves the same row to the top of the 1.5 to 3 times spread.
The 3 differences that drive the price
- Anatomy: the scrotal route is 1 skin cut of 1 to 2 cm; the spay is a 3 to 6 cm midline or flank entry through skin, muscle, and peritoneum.
- Time: 10 to 15 minutes against 25 to 40 minutes of surgery, which becomes 30 against 60 minutes of anesthesia and 4 billing blocks against 7.
- Closure and aftercare: 1 layer against 3, absorbable suture in both, but a spay carries a 10 to 14 day exercise limit and a 7 to 10 day recheck instead of 3 to 5 days.
Materials follow the anatomy. A spay needs a sterile laparotomy pack, 2 to 3 ligature strands, and often a 40 to 90 fluid bag; a castration needs a small pack and 1 suture. That is roughly 25 to 60 of consumables against 10 to 25, and it never appears as its own line on the invoice.
Where the 10 minutes and the 30 minutes go
Castration: 3 to 5 minutes to clip and scrub, 4 to 6 minutes of surgery, 2 minutes to check hemostasis, then 20 to 40 minutes of recovery. Spay: 5 to 8 minutes of prep, 25 to 40 minutes of surgery for a cat and 40 to 70 for a 20 kg dog, then 40 to 90 minutes of recovery and a 3 to 6 hour stay. The surgical fee tracks the middle number; the anesthesia and monitoring fees track the total.
Age adds time, not price at the low end. A 6 month old cat spay is the 200 to 300 case; the same surgery at 8 years, with a 2 kg ovarian mass or a pyometra, becomes a 500 to 900 case because surgery stretches to 60 minutes and monitoring to 90.
Add-ons that change the final number
Pre-anesthetic bloodwork adds 80 to 200 in the US, 60 to 150 in the UK, and 200 to 500 in China, and most vets want it for any patient over 7 years. A cone or recovery suit adds 15 to 40, take-home pain relief 20 to 60, a microchip 45 to 75, and an e-collar is not optional after a spay. Retained testicle surgery adds 30 to 60% because the second testicle sits in the abdomen and the case turns into an abdominal surgery.
Timing matters too. A spay done during heat or pregnancy adds 20 to 40% for extra ligatures and a larger incision, and an obese patient adds 15 to 30% for longer anesthesia and wound risk. Some clinics also quote a 25 to 40% after-hours multiplier, so a Sunday castration at 90 becomes 120.
Comparing a cat and a dog on the same day
A male dog under 10 kg costs 150 to 400, roughly 2 times a male cat, because body weight drives drug volume and table time. A female dog under 10 kg runs 300 to 800, but a 30 kg female dog reaches 600 to 1,400, since surgery alone takes 60 to 90 minutes. Weight bands are the single biggest variable after sex: a 5 kg and a 30 kg spay differ by 400 to 700 in the same hospital.
How to read 2 quotes that differ by 300
Line them up on 4 items: whether anesthesia monitoring is included, whether bloodwork is included, how many hours of post-operative observation are covered, and whether a recheck at 7 to 10 days is free. A 200 spay with 3 excluded items often totals 380, and a 500 quote with everything included can be the cheaper bill. Ask for the itemized estimate in writing, and ask what the price becomes if the surgery runs 20 minutes longer.
Annual visit frequency sits behind these numbers, and the post-op recheck is 1 of the 2 to 4 visits a year a young cat needs after surgery, which is why visit frequency and cost is worth reading before you book. For regional detail on the same procedure, see spay and neuter cost by region.
5 numbers to confirm before the appointment
- Is the quote for a cat or a dog, and at what weight band?
- Does it include anesthesia monitoring, and how many 15 minute blocks?
- Is bloodwork inside the number, and is it required at this age?
- How many hours of observation are covered before discharge?
- What is added if the testicle is retained or the patient is in heat?
Run both quotes through the cost calculator on the same 4 lines and the 300 gap usually shrinks to 80 or grows to 500, depending on what was excluded. Neither number tells you whether to operate: that decision belongs to you and the vet, and the price only tells you what the same operation costs in 3 different settings.
Frequently asked
Why is a spay 3 times the price of a castration?
The spay enters the abdomen, so surgery runs 25 to 40 minutes instead of 10 to 15 and closure takes 3 layers instead of 1. That drives 4 to 7 anesthesia billing blocks, a sterile laparotomy pack, 2 to 3 ligatures, and 3 to 6 hours of observation, which together explain most of the 200 to 600 against 60 to 200 gap.
Should I pick the cheapest castration quote?
Compare 4 lines before deciding: monitoring included, bloodwork included, hours of observation, and whether the 7 to 10 day recheck is free. A 60 quote that excludes pain relief, a cone, and monitoring often settles near 150, while a 120 quote with all 4 included can be the lower total.
Does age change the surgery price?
It changes time and add-ons more than the base fee. A 6 month old cat spay is the 200 to 300 case, while the same surgery at 8 years with a uterine problem can reach 500 to 900 because surgery stretches to 60 minutes and monitoring to 90, and bloodwork at 80 to 200 becomes mandatory.