Since a couple of years ago, there has been easier to carry less cash in Mexico with several ways both businesses and people can pay for services electronically or with credit or debit card.
Banks have been making transfers to other people, and paying for services and taxes, via their apps a lot easier. I use the apps of Santander, and Banorte, and both have been making such transactions easier with each app update. Specially since March, when the lock downs started because of the pandemic.
Also companies that allow to take payments using a tablet, or an smartphone, have been making a lot of inroads. The biggest one has been Clip, followed closely by PayPal's iZettle.
Also PayPal, and Mercado Pago, have entered the Mexican market heavily.
For the time being, most people use their bank's app, or website, to manage their payments. Specially since in Mexico almost everyone with a formal job receives their payroll on a bank account that their employer set up for them, or which ever account they asked to be used for that purpose.
Even freelancers can asked to be payed via electronic transfer to the bank account of their choice, making it a lot easier for everyone.
The services offered by the likes of Clip, and iZettle, make it a lot easier small businesses, to take cards. Which for many of them, means an increase in their sales in substantial numbers. In some ways, in areas where the use of credit and debit cards is prevalent, those small businesses that haven't made the jump to accepting card payments is becoming an odd thing to find.
Even in lower income areas, businesses using either Clip or iZettle are starting to become common. Even some entrepreneurial cab drivers are starting to offer it as a way to attract more costumers to compete against Uber and DiDi.
In several cities of Jalisco, one can pay public transportation without the use of cash using a card called Mi Movilidad or another called Innova Card. And the fact that you can now add balance them at some of OXXO convenience stores make them a lot more practical to use.
Taking all of this together, makes the need of carrying large amounts of cash is becoming a thing of the past.