Unsecured loan

1.There is no limit for unsecured loans... only condition is that the amount of loan to be received and paid back through account payee cheque.
Recording loan amount in stamp paper & receiving PAN details will be be helpful.
3.The loan can be interest free or may be for interest... if it is for interest and it is paid through cheque and TDS is properly dedcuted... Interest expenses can be claimed..

Thank you for your valuable reply... Sir.

Collateral against business loans was a practice which almost every bank and financial firm followed up until recent changes in financial and banking sector. Now CIBIL score and credit history plays a prominent role. There are unsecured business loans available for which you don’t need any collateral. Most common type of unsecured business loan is business lines of credit. You can get funds from your line of credit whenever you need like a credit card. But usually unsecured loans comes with a higher interest rate. Some of NBFC like Lendingkart are offering these business loans on less interest rates as well.