Ok, well he enters the estimated tax payments on his personal tax return. You simply don't. That means you may owe money. Did you make money with the business? Did you have a W2 job or other withholding of taxes? There's nothing you can do about it now other than be more aware going forward. If you don't owe on your return even after adding the 1065(K1), then you are no worse for the wear.
