Collecting rent In Cash With a

[Frankie Betancourt]

Hello ive been reading that ITS NOT a good idea to collect rent in cash But i have 4 rentals including my house and they are  all literally right next to my house so its convenient so the tenants just give me a call or knock on my door to pay in Cash But i ALSO write out a receipt My only concern is if im trying to get a LOAN will this written receipt renters book be proof of income? if not ill have to change it  to other collection methods ideas Because i would like to get a loan and have proof thanks,