# Couples Shared Account Engine MCP for AI Agents AI Agent Connect

> Couples Shared Account Engine. It handles the math for shared household expenses by splitting costs based on what each partner actually earns. It calculates fair proportions, handles one-off payments, and figures out who needs to send what to keep the budget balanced.

## Overview
- **Category:** productivity
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_Sn0UWJ5l9QLKeKgxKhtLF3s6Cz3QO1cm5zbunWIz/ai-agent-connect
- **Tags:** finance, budgeting, couples, expenses, automation, shared-accounts

## Description

The Couples Shared Account Engine provides a precise way for partners to manage joint household expenses. By using income-based proportions, the engine ensures that each partner contributes a fair share relative to their earnings. Instead of just splitting every bill down the middle, you can let your AI agent figure out the fair share for every grocery run, rent payment, or vacation cost based on your specific income proportions. If one person covers a big bill upfront, the engine calculates the exact amount the other person needs to send back to keep the balance correct. It even looks at what's left over after all the bills are paid so you can see your actual spending power. This makes it easy to stay on the same page without having to argue over the math every time a new bill hits your inbox. You can find this in the Vinkius catalog to get your household finances running on a predictable, fair system that respects your individual financial situations. It handles the heavy lifting of percentages and reconciliations so you can focus on your life together.

## Tools

### calculate_income_proportions
Determines the percentage of total household income each partner contributes. This is useful for setting a fair baseline for all future shared costs.

### calculate_individual_obligations
Figures out the exact dollar amount each person owes for a specific shared expense. Use this to see who pays what on a per-item basis.

### calculate_partner_surplus
Shows how much money each person has left after all shared and personal costs are deducted. It helps track remaining spending power.

### calculate_reconciliation_transfer
Calculates the specific amount one partner needs to send to the other to balance the books. This handles one-off payments and balance updates.

## Prompt Examples

**Prompt:** 
```
Partner A makes $80k and Partner B makes $40k. What's the split?
```

**Response:** 
```
Based on those incomes, here is the breakdown for your shared expenses:

| Partner | Annual Income | Share % |
| :--- | :--- | :--- |
| **Partner A** | $80,000 | **66.7%** |
| **Partner B** | $40,000 | **33.3%** |

Your shared expenses should be split at a **2:1 ratio**.
```

**Prompt:** 
```
We have a $1,200 rent bill. How much does Partner B owe if they make 40% of the income?
```

**Response:** 
```
Since Partner B accounts for 40% of the income, their share of the $1,200 rent is:

**Total Due: $480.00**

Partner A would cover the remaining $720.00.
```

**Prompt:** 
```
Partner A paid $500 for groceries, but their share was only $300. How much should Partner B send?
```

**Response:** 
```
To balance the proportions for that grocery run:

* **Partner A paid:** $500.00
* **Partner A share:** $300.00
* **Partner B share:** $200.00

**Partner B needs to transfer $200.00** to Partner A.
```

## Capabilities

### Split bills by income percentage
The engine calculates how much each person owes based on their specific salary ratio.

### Determine individual payment amounts
It identifies the exact dollar amount needed for a specific shared expense.

### Calculate balance transfers
It figures out the amount one partner needs to send to another to settle the books.

### Check remaining spending power
It shows how much money is left after all joint and personal costs are met.

### Automate monthly budget reconciliation
It handles the recurring math of balancing joint accounts every month.

## Use Cases

### Rent and Utilities
A partner pays the rent, and the agent uses `calculate_income_proportions` to tell the other what to send based on their salary ratio.

### Vacation Planning
A couple wants to see how a big trip affects their remaining funds after all costs are met.

### Grocery Splitting
Quickly see the split on a $200 grocery bill to keep things fair.

### Debt Paydown
Track how much each person contributes to a joint debt based on their specific income weight.

## Benefits

- Use `calculate_individual_obligations` to get exact dollar amounts for every bill so there's no guessing or rounding errors.
- Save time on monthly spreadsheets by letting your agent handle the math automatically every time a new bill arrives.
- Get a clear picture of your financial life without the stress of manual calculations.
- Avoid the friction of 50/50 splits that don't reflect your actual earnings.
- Keep your personal finances healthy while staying on top of shared responsibilities.

## How It Works

The bottom line is that it replaces manual spreadsheets with automated, fair-share math for joint finances.

1. Input the annual or monthly income for both partners.
2. Enter the shared expenses and who paid for them.
3. Get a breakdown of the fair split and the required transfers.

## Frequently Asked Questions

**Can the Couples Shared Account Engine handle different income levels?**
Yes. It uses your specific income ratios to calculate how much each person should contribute, making it perfect for partners with different salaries.

**How do I know how much my partner owes for a specific bill?**
The engine calculates the exact dollar amount for any shared expense based on your pre-set income proportions.

**Can I see what money I have left after bills?**
Yes, you can check your remaining surplus to see how much spending power you have left after all shared and personal costs are accounted for.

**Does the Couples Shared Account Engine work for one-off payments?**
It does. It can calculate the specific transfer needed to balance the books whenever one partner pays a shared bill upfront.

**Is this better than a 50/50 split?**
It's more accurate for couples where one person earns significantly more. It moves the math from 'equal' to 'equitable' based on your actual earnings.

**How does the Couples Shared Account Engine help with vacation costs?**
You can input a vacation total and the engine will tell you exactly what each person owes to keep the costs proportional to your incomes.

**How is the expense split calculated?**
The split is calculated using the income ratio of both partners. By using `calculate_income_proportions`, you can find the percentage each partner should contribute based on their relative earnings.

**What if one partner paid for everything upfront?**
You can use `calculate_reconciliation_transfer` to find the exact amount that needs to be transferred from one partner to another or to a joint account to balance the proportions.

**Can I check if my personal expenses are too high?**
Yes, the `calculate_partner_surplus` tool allows you to calculate your remaining funds after accounting for both your share of joint expenses and your individual personal costs.