# Split-Bill Grace Period Calculator MCP for AI Agents AI Agent Connect > Split-Bill Grace Period Calculator handles the awkward math of group expenses when people pay you back late. It calculates exactly how much someone owes you, including a daily interest rate to cover the cost of you fronting the money. No more guessing or losing out on your own cash just because a friend is slow to Venmo you. ## Overview - **Category:** finance - **Price:** Free - **Endpoint:** https://edge.vinkius.com/vk_preview_AtsSXaGKb2cHlueOUtQRQ6qYGpBAW9spIaDdoGOA/ai-agent-connect - **Tags:** split-bill, interest-calculator, repayment, expense-sharing, financial-tool ## Description Dealing with shared expenses is usually a headache, especially when you're the one who always puts the card down first. It's frustrating to let your own money sit in someone else's account while you wait for a reimbursement. This Connector fixes that by calculating the actual cost of that delay. Instead of just asking for the original amount, you can determine a fair repayment total that includes a daily interest rate. This ensures that the person who paid upfront isn't losing out on the use of their own funds. You can check the interest accrued over a specific period and verify that the final payment actually covers the original bill. It takes the emotion out of the conversation and replaces it with clear, objective math. Because Vinkius makes it easy to connect these tools to your favorite AI client, you can just tell your agent to figure out what your roommate owes you for last month's rent and get a precise number back. It's about making sure everyone pays their fair share, down to the cent. You don't have to be a math whiz or a spreadsheet nerd to keep your personal finances straight. Just give your agent the numbers and let it do the heavy lifting of calculating the time value of your money. ## Tools ### calculate_repayment_total Calculates the final adjusted dollar amount that Person B must send to Person A. It combines the principal debt with the calculated interest. ### get_interest_accrual Identifies the exact amount of extra money being charged due to a payment delay. This helps you show the specific cost of the float. ### validate_bill_coverage Verifies if the combined initial payment and final repayment cover the total bill. It ensures the original debt is fully satisfied. ## Prompt Examples **Prompt:** ``` Person B owes $50.00 and is paying 10 days late. They agreed to a 0.1% daily interest rate. How much should they send me? ``` **Response:** ``` Person B should send you **$50.50**. Here is the breakdown: * **Principal:** $50.00 * **Interest (10 days at 0.1%):** $0.50 * **Total Due:** $50.50 ``` **Prompt:** ``` I paid $200.00 for a flight and my friend is paying me back 30 days later. What is the interest cost at a 0.05% daily rate? ``` **Response:** ``` The interest accrued over 30 days is **$3.00**. If you want to be made whole, they should send you **$203.00**. ``` **Prompt:** ``` I paid $40.00 upfront and they are paying back $65.00 for a $100.00 bill. Is that enough to cover it? ``` **Response:** ``` Yes, the bill is satisfied. * **Total Paid Upfront:** $40.00 * **Final Repayment:** $65.00 * **Total Covered:** $105.00 * **Status:** **Satisfied** (Exceeds the $100.00 bill by $5.00). ``` ## Capabilities ### Calculate adjusted repayment totals Get the final dollar amount someone owes you including the cost of the delay. ### Identify specific interest costs See exactly how much extra money is being charged due to a late payment. ### Verify total bill coverage Confirm that the final payment actually covers the original cost of the bill. ### Determine opportunity costs Figure out the real cost of letting your money sit in someone else's account. ### Validate payment amounts Check if the combined payments satisfy the original debt completely. ## Use Cases ### Group trip reimbursement A friend booked a $1,000 flight for a group and everyone is paying them back 30 days later. Use calculate_repayment_total to add interest to the share. ### Late roommate rent A roommate pays rent 10 days late every month. Use get_interest_accrual to show them the exact cost of the delay based on a 0.1% daily rate. ### Freelance material costs You fronted $300 in supplies for a client. They are paying you back 2 weeks late. Use calculate_repayment_total to get the final amount due. ### Dinner tab settlement You paid for a $150 dinner. Your friend is Venmoing you the next day. Use validate_bill_coverage to make sure their payment covers the whole bill. ## Benefits - Stop losing money on fronted costs by using calculate_repayment_total to include interest in every reimbursement. - Remove the awkwardness of asking for extra money by using get_interest_accrual to show the specific math of the delay. - Ensure every cent is accounted for by using validate_bill_coverage to check that the original debt is fully satisfied. - Get precise numbers instead of rounded guesses for every group expense, making your requests for money feel more objective. - Automate the math of the time value of money without having to open a spreadsheet or a calculator every time someone pays you back. ## How It Works The bottom line is you get a mathematically fair repayment amount that accounts for the time value of your money. 1. Provide the original bill amount and the number of days the payment is delayed. 2. Specify the daily interest rate you want to apply to the debt. 3. Get a final repayment figure that includes both the principal and the interest. ## Frequently Asked Questions **Can the Split-Bill Grace Period Calculator handle large group trips?** Yes, it's perfect for that. You can calculate the fair share for each person while accounting for the time value of the money you fronted for flights or hotels. **How does the Split-Bill Grace Period Calculator handle interest?** It uses a daily rate you provide to calculate exactly how much extra money is owed due to a delay. This helps you get paid back fairly without it feeling like a random fee. **Can I use the Split-Bill Grace Period Calculator for my roommates?** Absolutely. It's a great way to handle late rent or utilities by showing your roommates the exact cost of the delay using objective math. **What happens if the repayment doesn't cover the bill?** The tool will check the total for you. It verifies if the combined payments satisfy the original debt so you know exactly how much is still owed. **Is the Split-Bill Grace Period Calculator good for small business costs?** Yes, it's useful for freelancers who front materials or supplies for clients. It helps you calculate a fair repayment that includes the cost of the delay. **How is the interest rate calculated?** The tool uses a fixed daily rate of 0.02%, which is approximately 7.3% annually, applied to the principal amount for every day of the delay. **What does `calculate_repayment_total` do?** It determines the final, adjusted dollar amount that Person B must send to Person A, including the interest accrued during the delay period. **Can I check if my total payments cover the original bill?** Yes, you can use the `validate_bill_coverage` tool to verify if the combined initial payment and final repayment are sufficient to cover the total original expense.