Questions & Answers about Hoy haré una transferencia desde mi cuenta para pagar el alquiler.
Haré is the future tense of hacer (to do/make): I will do/make. Here it’s used for a planned action you’ll do later (often “today, later”).
Hago is the present tense: I do / I’m doing. You could say Hoy hago una transferencia... if you mean you’re doing it as part of today’s plan or routine, but haré more clearly signals “I will do it.”