Before you start

Resident card, or at minimum a passport and CURP for a fintech account
A Mexican mobile number for verification codes
A comprobante de domicilio under three months old for a full account
An RFC to be paid a Mexican salary

Step-by-step

1
Open a fintech account on day one
Nu, Klar, Hey Banco and Albo approve from the app with a CURP, an ID scan and a selfie, usually within minutes to a couple of days. You get a working card, a CLABE and SPEI transfers immediately, which is what you need to pay a deposit while the paperwork catches up.
Mobile appWho: YouMinutes to two daysFree, no minimum balance
2
Understand the deposit cap you are living under
A Nivel 2 account is capped at 3,000 UDIs of deposits a month — around MXN 25,000 in 2026, drifting upwards because UDIs are inflation-linked. Fine for spending, dangerous for salary: a payroll deposit above the cap can bounce or freeze the account. Know the number before your first payday.
Mobile appWho: You
3
Solve the comprobante de domicilio
CESPT bills water to the property, so the workable options are a CFE electricity account moved into your name with the landlord's consent, a Telmex, Totalplay or Izzi fibre contract you sign yourself, a rental contract ratified before a notary, or the municipal predial receipt if you buy. Agree it during the lease negotiation rather than after.
In personWho: You, with your landlordDays to weeks
4
Open the full account in branch
BBVA, Banorte, Santander and Citibanamex open Nivel 4 accounts in person for foreigners, and the Zona Río branches are used to cross-border customers. Bring passport, resident card, CURP, RFC and the comprobante, and ask explicitly for the full account so the deposit cap is removed. Expect an opening deposit of roughly MXN 500–1,000.
In personWho: You30–90 minutes in branchMXN 500–1,000 opening deposit
5
Ask specifically about dollar accounts and the deposit rules on them
Mexican banks in the border states do offer US-dollar accounts, but cash-dollar deposits are subject to anti-money-laundering limits that are tighter than most newcomers expect, and the rules differ between account holders who are individuals and those who are businesses, and between residents and non-residents. If you will be paid in dollars, have this conversation with the branch before you need it, and get the monthly cash-deposit limit in writing.
In personWho: Anyone paid in USDOne branch visit
6
Move money electronically rather than physically
The instinct in a border city is to carry cash across and change it. Wise, Remitly and similar services move USD into a Mexican CLABE far more cheaply than a casa de cambio near the line, an ATM withdrawal in the wrong currency or a US bank's own conversion. Set one up before the first payday, and use SPEI and DiMo for everything domestic — transfers between Mexican banks settle in seconds and are usually free.
Mobile appWho: You

Documents you’ll need

Passport and resident card
CURP, and an RFC for a salary account
Comprobante de domicilio under three months old
Mexican mobile number
Opening deposit for a traditional bank

Things most newcomers don’t know

The cheapest way to convert money in a border city is the one that never touches the border.

Carrying dollars across and changing them at a casa de cambio near the line feels efficient and is usually the worst rate available, and letting a US card convert at the point of sale is worse still. An electronic transfer into a Mexican CLABE through a specialist service is typically a fraction of a percent. Over a year of a dollar salary and peso rent, the difference is a month's rent.

Source: community-reported

Cash-dollar deposits into Mexican accounts are capped, and the caps surprise people who are paid in cash.

Mexican anti-money-laundering rules limit how much physical US currency an account holder may deposit in a month, with different treatment for individuals and businesses and for residents and non-residents. Someone paid in dollar cash for work in San Diego can therefore find their own bank refusing their own wages. Establish the limit with your branch in advance and structure how you are paid around it rather than discovering it at the counter.

Source: CONDUSEF / bank AML rules

The account level, not your nationality, decides what the account can do.

Mexican regulation defines tiers by how much identification the bank collected. Nivel 2 needs an ID and CURP and caps deposits at 3,000 UDIs a month — about MXN 25,000 in 2026; Nivel 4 adds proof of address and removes the cap. Knowing which tier you are in explains every apparently arbitrary refusal and tells you exactly which document fixes it.

Source: CONDUSEF

Tourist-status applicants are refused by mainstream banks, so sequence residency first.

Traditional banks generally require a temporary or permanent resident card to open an account for a foreigner, and branch staff will not negotiate. The order that works is INM residency, then CURP, then a fintech account for immediate use, then a full bank account once the address paperwork exists.

Source: CONDUSEF / ExpatDen

Common mistakes to avoid

Changing cash at a casa de cambio near the crossing instead of transferring electronically.
Assuming a Mexican account will take unlimited cash-dollar deposits.
Letting a dollar salary land in a Nivel 2 account and hitting the monthly cap.
Trying to open a traditional account before the resident card exists.
Assuming the CESPT water bill will work as a comprobante de domicilio.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.