Based on the rate I'm losing at and my BMR + activities, I'm actually getting at least that many calories, even on a low day, but my Fitday count generally comes up short of 1,300 because I don't cook most of my own food and eyeball the measurements. For instance, my MIL cooked stir-fried green beans last night; the closest Fitday entry is "Beans, string, green, cooked, from fresh, fat added in cooking." Except that it says there's 8g of fat in 2 cups of beans, and I'd guess there's closer to 2 tablespoons (so 20g) the way she makes them, which is an extra 108 calories. My solution is to record using the Fitday numbers, but to try and skew my fat percentage a bit lower than my "real" target.
It's worked for me for 6 months so far, with a significant increase in fitness and a steady loss averaging around 1% of weight a week. (This is the best weight-loss week of the month for me; next week is a plateau week due to hormones.) But it's not well-suited to the upcoming bonus, which is fine by me - I'm doing this to have fun, not to win.