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Shared expenses without arguments.

Practical methods to split bills with your partner, flatmates and friends. No magic formulas or theory: just what works day to day.

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Family & home Couples & money Groups & trips Flat-sharing

Neighborhood bar table with half-finished draft beers and a small dish of olives

flat leisure splitting Aug 26, 2026

Rounds at the bar with flatmates and friends: a mini-split

The corner bar is the fifth flatmate. How to handle the rounds so nobody ends up paying four times in a row, without turning Friday into a spreadsheet.

ControlarGastos · Flat-sharing

A couple going over how they split their expenses on a sheet of paper with a calculator, at the kitchen table.

couple rent calculadora Aug 25, 2026

Split expenses by income: formula, example and calculator

How to split the rent and the shared bills in proportion to what each person earns, with the formula, a worked example and a calculator that does it for you.

ControlarGastos · Flat-sharing

Couple reviewing car documents and accounts at the kitchen table

couple car property Aug 24, 2026

Paying for your partner's car as a couple: the big mistake

Paying half the payment on the car your partner brought into the relationship seems fair, but it creates an invisible liability that sooner or later blows up. The difference between use and ownership changes everything.

ControlarGastos · Couples & money

A laptop on a plain wooden desk next to a paper receipt and a coffee cup, lit by soft natural light.

ia mcp agentes Aug 21, 2026

Connect your AI agent to your expenses with MCP

Most assistants can only talk about your spending. An MCP server lets them log it, query it and settle debts for you. Here is the URL, the token, and the three checks that prove it works.

ControlarGastos · Groups & trips

A child's hand putting a coin into a ceramic piggy bank on a wooden table

family children financial literacy Aug 21, 2026

A kid's allowance: shared expense or each parent's own?

When to start the allowance, how much to give and, above all, whether it comes from the shared family pot or each parent chips in their part. A decision that says more about the family than about the child.

ControlarGastos · Family & home

A hand bringing a plug towards a wall power socket on a plain painted wall, in natural light.

mcp ia agentes Aug 20, 2026

What is an MCP server and what is it for?

MCP is almost always explained in the abstract, which is why it does not land. Here is the same idea told through an ordinary case: an agent logging an expense for you.

ControlarGastos · Groups & trips

A small brass key resting on a plain paper document on a wooden table, lit softly from the side.

mcp seguridad permisos Aug 19, 2026

MCP server permissions: what your agent can do

Connecting an agent to your data is the easy part. Deciding what it may touch is the part almost nobody reads, and the only one that matters when something goes wrong.

ControlarGastos · Groups & trips

Remote-work setup with a laptop on a wooden table and a fibre router in the background

flat wifi remote work Aug 19, 2026

Shared flat fibre: what speed if everyone works remotely

When three out of four are on video calls at once, 300 Mbps symmetrical falls short. When it's worth upgrading to gigabit fibre and how to justify it to everyone.

ControlarGastos · Flat-sharing

A crumpled supermarket receipt on a kitchen counter next to a smartphone lying face down.

ia gastos automatizacion Aug 18, 2026

AI expense tracker: what actually works

The promise is that AI will keep the books for your household, flat or group. The reality turns on a distinction almost no advert makes: whether the assistant only reads what you paste, or can actually operate the app.

ControlarGastos · Groups & trips

A couple sitting at a kitchen table with coffee mugs and a notebook, going over their accounts

couple budget saving Aug 17, 2026

The 50/30/20 Rule Applied to a Couple With Two Salaries

The 50/30/20 rule works when only one person earns. As a couple it breaks down because needs start to be yours, mine and ours. How to adapt it without arguing every month.

ControlarGastos · Couples & money