Fidamen

RV Loan Balloon Payment Calculator with Extra Payments

This calculator models an RV loan that uses amortization to set periodic payments but matures earlier with a balloon payment. You can add recurring extra payments and a single one-time extra payment to see how they lower the balloon or interest paid.

Results are estimations intended for planning. They assume consistent periodic payments, that extras are applied directly to principal when specified, and that the stated periodic interest compounds at the periodic rate derived from the annual rate you enter.

Updated Nov 21, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record 901e3ee4ea02 • Reviewed by Fidamen Standards Committee

Computes the periodic regular payment based on an amortization period, then computes the outstanding balloon balance at the loan maturity (shorter balloon term). Supports recurring extra payments each period and one-time extra payments applied at a specific period.

Inputs

Results

Updates as you type

Regular periodic payment

$358.22

Balloon amount due at maturity

$42,449.80

Interest paid through balloon maturity

$13,942.73

OutputValueUnit
Regular periodic payment$358.22USD
Balloon amount due at maturity$42,449.80USD
Interest paid through balloon maturity$13,942.73USD
Primary result$358.22

Visualization

Methodology

Periodic interest rate is annual_interest_rate / 100 divided by payments per year. Regular payment is computed from the standard amortizing loan formula using the amortization period specified.

Balloon amount is the outstanding principal after the specified number of periods until balloon maturity. Recurring extras are modeled as additional principal payments each period. A one-time extra payment is applied at the specified period and reduces the outstanding balance thereafter.

Where a zero interest rate is used, the regular payment formula reduces to principal divided by the number of amortization periods. Edge cases and rounding are treated per the accuracy notes below.

Worked examples

Example 1: $50,000 loan, 6% APR, monthly, 20-year amortization, 5-year balloon, no extras → shows regular payment and balloon due at 5 years.

Example 2: Same loan with $200 monthly recurring extra → balloon amount reduces significantly and interest paid to balloon falls.

F.A.Q.

Does the calculator show a full amortization schedule?

This tool returns the key results (regular payment, balloon amount at maturity, interest paid to balloon). It does not produce a full per-period schedule; use exported schedule tools when a line-by-line amortization is needed.

How are extra payments applied?

Recurring extras are added to each payment and applied to principal. One-time extras are applied at the specified period number and immediately reduce principal for subsequent periods.

What if the interest rate is zero?

If the annual interest rate is zero, the regular payment is equivalent to principal divided by the amortization period (payments count). The formula in this tool assumes positive rates; results at zero rate are computed using the zero-rate simplification.

Is this financial or legal advice?

No. This calculator provides estimates for planning only. Confirm final figures with your lender and review your loan contract for exact payment and payoff terms.

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: 901e3ee4ea02

What changed (latest)

v1.0.0 • 2025-11-21 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 21, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-21 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 38203646c9d8