Or, if you are asking about tax penalties because you can't pay your taxes, yes, there is a penalty for not paying in full and on time. You should pay as much as you can afford before the April 15 deadline. If you think it will take more than 90 days to pay off the rest, you can apply for a payment plan. The IRS has some discretion to waive or lessen penalties but it is not guaranteed.
https://www.irs.gov/payments/payment-plans-installment-agreements
