I work as a consultant (1099) for a startup that has not paid my bills since June. Since I have not had any income I have not paid withholding since then.
How do I handle my US personal income taxes on this? The company has been billed for 6 months salary which has not paid (and, in the worst case, will not be paid). Do I declare as income only the money I have actually received, and file an amended return when/if the back pay comes in? Count the unpaid salary as a business loss? Or is it income in the year it is paid and not the year it is earned?
And how does withholding work? I missed 2 estimated withholding payments because I did not receive the income. My payments cover the income I have actually received. Will I be penalized for the missing payments? How about if I file an amended return when I receive the income, will that mean that I will just owe the extra taxes then, or will I be penalized for not withholding at that time?
Thanks