Ok wowsers. That is a bit of a pickle. I would start saving reciepts ASAP and search through purses, desks, your office... anywhere a reciept of 2 might have gotten stashed. Every reciept counts.

As for putting money away... you might not be as screwed as you're thinking. It's August there is still time. It may crimp your budget some but start saving! Can you afford 150 a month in a saving account? You have August - March/April of next year to get some put away. Yes this carries into next year when technically you should be saving for 2013 taxes but you need to deal with immediate first. That gets about 1300 put away which will be a big help. Save ALL reciepts from now on.

To calculate what you've already spent you may need to do a guesstimate. Supplies, start up expenses, vehicle expenses. I'm not sure how to help you with those but for food there is a system to help. I have heard a lot of people make mention of a "set food amount" per child per day. Say 10 bucks. So every day you spend 10 bucks per child, then you work out how many days you've had kiddos and how many kiddos on each day. That should give you a food amount to claim. Then if you keep all reciepts for food between now and end of year you may have enough reciepts to cover the amount you wish to claim. This is certiantly not an ideal system but for this year it may work. And please take note that $10 was an arbitrary number that popped into my head, not a suggestion for how much to charge. I don't do it that way so I would get advice from someone who uses this system on settling on a number.

All your income needs to be claimed. My DH also ask wondered why I don't just work "under the table" and my response is just not worth the risk. If you have a parent who without a reciept claims the money they paid you CRA can come back and you could be in BIG trouble. I would never as a parent not claim daycare expenses, those are a HUGE deduction. You're actually lucky this situation arose now rather than next year when you still have time to try and fix the situation.

Hope this helps!! And just for future purposes here is what I do with reciepts. I have a box (pretty one from the Dollarama) on top of my fridge and every time I come up with groceries etc I put the reciepts in there. I know I could be SOOO much more organized but for me simple works. I know myself and spending 2 hours next March organizing the box is much more likely to happen than keeping everything neatly organized in folders by type of receipt/month etc. If you're at all like me a simple system like this might work to make things easy.