Fidamen

RV Loan Balloon Payment Calculator

This calculator helps RV buyers and lenders estimate recurring payments and final balloon payments for loans that include a lump-sum balloon due at maturity. It supports both monthly and bi-weekly (26 payments/year) schedules and can compute either the payment given a balloon or the balloon required for a target payment.

Use the bi-weekly option to model more frequent payments which can lower interest paid over the same nominal APR. Enter either a balloon amount or a balloon percentage; the percentage will override an absolute balloon value if both are provided.

Updated Nov 8, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record d2cec8b6c79d • Reviewed by Fidamen Standards Committee

Compute the recurring payment amount when a final balloon payment is due at loan maturity. Supports bi-weekly (26) or monthly (12) schedules and accepts either an absolute balloon or a balloon expressed as a percentage of the loan.

Inputs

Results

Updates as you type

Regular payment (per period)

$450.97

Balloon due at end

$0.00

Number of payments

130

Periodic interest rate

0.25%

Total paid (payments + balloon)

$58,626.26

Total interest paid

$8,626.26

OutputValueUnit
Regular payment (per period)$450.97USD
Balloon due at end$0.00USD
Number of payments130—
Periodic interest rate0.25%—
Total paid (payments + balloon)$58,626.26USD
Total interest paid$8,626.26USD
Primary result$450.97

Visualization

Methodology

Calculations use standard time value of money formulas: the present value of scheduled payments plus the present value of the balloon equals the loan principal. For interest-bearing loans we use the annuity formula to derive the periodic payment.

Bi-weekly schedules are modeled as 26 equal periods per year. All interest-rate inputs are treated as nominal annual rates and converted to a periodic rate by dividing by the number of payments per year.

Worked examples

Example 1: $50,000 loan, 6.5% APR, 5 years, bi-weekly (26). Balloon $10,000 produces a lower recurring payment than carrying the entire principal to amortize.

Example 2: If you can only afford $300 bi-weekly, the tool can estimate the balloon required at the end of the term to meet that payment level.

F.A.Q.

Does choosing bi-weekly always save interest versus monthly?

Bi-weekly reduces the compounding interval (26 periods vs 12) for the same nominal APR, which typically reduces total interest if the APR is nominal and calculated on those periods. Actual savings depend on lender rounding, fees, and whether payments are applied immediately. Always review the lender's amortization schedule.

What if I enter both a balloon amount and a balloon percentage?

The calculator will use the balloon percentage if it is greater than zero. Otherwise it uses the explicit balloon amount. This lets you test either absolute or relative-balloon scenarios.

Are results exact and guaranteed?

Results use standard actuarial formulas and are intended for planning and comparison. They do not include lender fees, insurance, taxes, or rounding rules that may affect actual payment schedules. Always verify numbers against the lender's final amortization schedule.

How should I interpret the periodic rate?

Periodic rate is the nominal annual rate divided by the chosen number of payments per year. It is not an APR disclosure; APR includes fees and disclosure rules that vary by jurisdiction.

What accuracy and compliance practices are used?

Calculations follow standard financial formulas. For engineering and software quality we reference best practices from NIST and ISO for reproducible numeric results and testing; however, this tool is not a substitute for audited lender disclosures. See citations for standards and guidance.

Sources & citations

Further resources

External guidance

Versioning & Change Control

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

Record ID: d2cec8b6c79d

What changed (latest)

v1.0.0 • 2025-11-08 • 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 8, 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 • 2025-11-08 • 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: 0885931b8024