It really depends. I'll try and write this out month by month:
You could spend $15-$50+ on grain per month, depending on the brand your horse gets and how much he eats. I spend $30 on 2 bags of Purina Strategy for one horse per month.
Hay greatly depends too. I spent $200 on 30 bales of hay last month. (we had a bad drought..pray for rain!) It depends on how much your horse needs, and how much it costs per bale.
De-wormer needs to be done every other month. You can spend $8-$18 on a tube of it.
Farrier needs to be done every 6-10 weeks, depending on the time of year, and the individual. My horse is done every 8 weeks in the summer and 10 weeks in the winter at $25 per trim. (he's kept barefoot.) Keep in mind if your horse has shoes it's going to be much more expensive, and some trimmers charge up to $40 per trim.
Vet appointments need to be done annually and as needed. It costs me about $80 to have my vet out at my house if I have a concern about my horse's health (and if he prescribes medicine it could be more) Shots cost me about $150 per year.
Equipment you will buy as needed. In the first year of horse ownership, you're going to be hurt a lot more financially than the years to follow because you need to buy all the tack and other equipment for your horse. I spent AT LEAST $800 on my tack (bridle, saddle, bit, boots, blankets, etc..)
Keep in mind:
If your horse is boarded at a boarding stable, you will not have to pay for hay or grain, but it will still cost you $200-$600 per month for that. (not including vet, farrier, or dewormer...etc)
Your horse may or may not need supplements, but it's really easy to buy $100 worth every month.
So to sum all that up: It greatly depends on where you live, what your horse needs, and if you have coupons (: lol Horses are a pretty expensive hobby, but SO worth it! (: I probably spent about $2000 on my horse this year (actually in the span of about 6 months lol) (horse included which was $750) because I had to buy all the equipment, and fencing and such. Like I said before, once you have everything you need, you'll only have to pay for repairs (fence and equipment) , vet, farrier, feed, and dewormer.
Last edited by xxGallopxx; 01-05-2012 at 01:39 PM.