Calculate Loan Payments in Sheets
Formula
Run loan math in a cell. =VERVE("loanpaymentcalculator", …) returns the monthly payment, total interest and more — Google Sheets or Excel.
=VERVE("loanpaymentcalculator", A2, B2, C2)=VERVE.CALL("loanpaymentcalculator", A2, B2, C2)A2 holds loanAmount, B2 holds interestRate, C2 holds loanTerm. Arguments go in that order — the same order as the table below.
With literal values
Nothing has to come from a cell — typed values work the same way.
=VERVE("loanpaymentcalculator", 20000, 5.5, 5)Inputs
Required inputs are positional, in the order below. Everything else is passed as a "name", value pair after them — the same shape as SUMIFS.
| Input | Type | Where it goes | Description |
|---|---|---|---|
loanAmountRequired | number | argument 2 | The loan amount (e.g. 20000) |
interestRateRequired | number | argument 3 | The interest rate (percentage) (e.g. 5.5) |
loanTermRequired | integer | argument 4 | The loan term in years (e.g. 5) |
downpayment | number | "downpayment", value | Amount paid up front, subtracted from the loan amount before interest is applied (e.g. 5000) |
Passing an option
=VERVE("loanpaymentcalculator", A2, B2, C2, "downpayment", "5000")What lands in your sheet
With no "field" pair the formula spills the whole response as two columns — field name on the left, value on the right — starting at the cell you typed in. Make sure the cells below and to the right are empty.
Pulling one value
Add a "field" pair to get a single cell back instead of a table. The field name is the dot-path from the table below.
=VERVE("loanpaymentcalculator", A2, B2, C2, "field", "loanAmount")=VERVE.CALL("loanpaymentcalculator", A2, B2, C2, "field", "loanAmount")Available fields
#PREMIUM(field) rather than a value, so a locked field never looks like a real answer.| Use as "field" | Type | Example cell value | Description |
|---|---|---|---|
loanAmount | number | 32000 | Original loan amount in dollars |
downpayment | number | 0 | Down payment amount applied to loan |
interestRate | number | 8.5 | Annual interest rate as percentage |
loanTerm | number | 6 | Loan repayment period in years |
monthly_payment | number | 568.91 | Required monthly loan payment amount |
total_interest_paid | number | 8961.4 | Total interest paid over loan term |
total_payment | number | 40961.52 | Total amount paid over entire loan term |
interestRatio | number | 21.88 | Percentage of total payment allocated to interest |
formatted | object | {…} | |
formatted.loanAmountPremium | string | $32,000.00 | Formatted loan amount with currency symbol |
formatted.monthlyPaymentPremium | string | $568.91 | Formatted monthly payment with currency symbol |
formatted.totalInterestPaidPremium | string | $8,961.40 | Formatted total interest paid with currency |
formatted.totalPaymentPremium | string | $40,961.52 | Formatted total payment amount with currency |
amortization_schedulePremium | array[3] | list of rows | Month-by-month breakdown of payments and balances |
amortization_schedule.0.month | number | 1 | |
amortization_schedule.0.interest_payment | number | 226.67 | |
amortization_schedule.0.principal_payment | number | 342.24 | |
amortization_schedule.0.remaining_balance | number | 31657.76 |
Filling a whole column
Hand the first argument a range instead of a cell and the add-in makes one batched call for the lot, then spills the answers down. That is faster than dragging the formula and costs the same credits — one per row looked up.
=VERVE("loanpaymentcalculator", A2:A100, B2, C2, "field", "loanAmount")=VERVE.CALL("loanpaymentcalculator", A2:A100, B2, C2, "field", "loanAmount")A2:A100 is the column of loanAmount values. The result spills down alongside it, one row per input, blanks skipped.
When a cell doesn't fill
A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() won't catch it; test with LEFT(cell, 4) = "#ERR" instead.
| Cell reads | What happened |
|---|---|
#ERR Not connected | No API key saved. Open the side panel and connect your account. |
#ERR Replace <name> with a cell or value | The preview formula was copied as-is. Swap the placeholder for a cell reference. |
#ERR No "x" in loanpaymentcalculator | An option name that this source doesn't take. The message lists the ones it does. |
#ERR No data point "…" | The "field" path isn't in the response. Check the dot-path against the table above. |
#PREMIUM(field) | The field exists but your plan doesn't include it. |
#ERR Out of credits | The month's credits are spent. Usage resets on your billing date. |
Before the formula works
The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet doesn't leak it and a collaborator without access simply sees the last calculated values.
- Install the add-in for Google Sheets or Excel.
- Open the side panel and sign in, or paste a key from your dashboard.
- Type the formula above into any cell.
Other ways to use Calculate Loan Payments in Sheets
Set up Calculate Loan Payments in Sheets on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.
Frequently asked questions
Does Calculate Loan Payments in Sheets work in both Google Sheets and Excel?
Yes — the same source, the same arguments. Sheets calls it =VERVE("loanpaymentcalculator", …) and Excel calls it =VERVE.CALL("loanpaymentcalculator", …); that function name is the only difference.
Do the cells recalculate on their own?
They recalculate when the sheet does — on edit, on open, or on a manual recalc. Each recalculation is a fresh call and spends credits, so for a large static column it's worth copying the results and pasting them as values.
How many credits does a filled column cost?
1 credit per row looked up, whether you drag the formula or pass a range. The range form is one HTTP call instead of many, but the credit count is the same.
Can I share the sheet without sharing my key?
Yes. The key is stored against your account, not in the file. Collaborators see the values already in the cells; formulas only recalculate for someone who has connected their own account.
Why is a cell showing #ERR instead of an error?
So you can read the reason. Excel can't display a custom message on a real spreadsheet error, so the add-in returns the explanation as text on both platforms instead.