<h1>Tax collection default certificate: Form 150 enables electronic proof that the collectee paid tax and the collector is not treated as in default.</h1> Form No. 150 is the electronic accountant's certificate required where a collector has failed to collect tax at source, but the collectee has included the relevant income in the return and paid the tax due, so that the collector is not treated as an assessee in default under section 398(2). The form is furnished electronically through the prescribed online filing framework, supported by a Chartered Accountant's certification confirming inclusion of income in the collectee's return and proof of tax payment. The process uses TRACES and e-filing portal steps, with prescribed transaction details, supporting records, and digitally signed certification.