So far the question of existence of basic ingredients for drawing of presumption under Sections 118 and 139 of the NI Act is concerned, apparent it is that the appellant-accused could not deny his signatures on the cheques in question that had been drawn in favour of the complainant on a bank account maintained by the accused for a sum of Rs 3 lakhs each. The said cheques were presented to the bank concerned within the period of their validity and were returned unpaid for the reason of either the balance being insufficient or the account being closed. All the basic ingredients of Section 138 as also of Sections 118 and 139 are apparent on the face of the record. The trial court had also consciously taken note of these facts and had drawn the requisite presumption. Therefore, it is required to be presumed that the cheques in question were drawn for consideration and the holder of the cheques i.e. the complainant received the same in discharge of an existing debt. The onus, therefore, shifts on the appellant-accused to establish a probable defence so as to rebut such a presumption.

17. On the aspects relating to preponderance of probabilities, the accused has to bring on record such facts and such circumstances which may lead the Court to conclude either that the consideration did not exist or that its non-existence was so probable that a prudent man would, under the circumstances of the case, act upon the plea that the consideration did not exist. This Court has, time and again, emphasised that though there may not be sufficient negative evidence which could be brought on record by the accused to discharge his burden, yet mere denial would not fulfil the requirements of rebuttal as envisaged under Sections 118 and 139 of the NI Act.

Rohitbhai Jivanlal Patel vs. State of Gujarat (2019) 18 SCC 106

20. The accused in a trial under Section 138 of the Act has two options. He can either show that consideration and debt did not exist or that under the particular circumstances of the case the non-existence of consideration and debt is so probable that a prudent man ought to suppose that no consideration and debt existed. To rebut the statutory presumptions an accused is not expected to prove his defence beyond reasonable doubt as is expected of the complainant in a criminal trial. The accused may adduce direct evidence to prove that the note in question was not supported by consideration and that there was no debt or liability to be discharged by him. However, the court need not insist in every case that the accused should disprove the non-existence of consideration and debt by leading direct evidence because the existence of negative evidence is neither possible nor contemplated. At the same time, it is clear that bare denial of the passing of the consideration and existence of debt, apparently would not serve the purpose of the accused. Something which is probable has to be brought on record for getting the burden of proof shifted to the complainant. To disprove the presumptions, the accused should bring on record such facts and circumstances, upon consideration of which, the court may either believe that the consideration and debt did not exist or their non-existence was so probable that a prudent man would under the circumstances of the case, act upon the plea that they did not exist. Apart from adducing direct evidence to prove that the note in question was not supported by consideration or that he had not incurred any debt or liability, the accused may also rely upon circumstantial evidence and if the circumstances so relied upon are compelling, the burden may likewise shift again on to the complainant. The accused may also rely upon presumptions of fact, for instance, those mentioned in Section 114 of the Evidence Act to rebut the presumptions arising under Sections 118 and 139 of the Act.

21. The accused has also an option to prove the non-existence of consideration and debt or liability either by letting in evidence or in some clear and exceptional cases, from the case set out by the complainant, that is, the averments in the complaint, the case set out in the statutory notice and evidence adduced by the complainant during the trial. Once such rebuttal evidence is adduced and accepted by the court, having regard to all the circumstances of the case and the preponderance of probabilities, the evidential burden shifts back to the complainant and, therefore, the presumptions under Sections 118 and 139 of the Act will not again come to the complainant's rescue

Kumar Exports v. Sharma Carpets, (2009) 2 SCC 513