Fidamen

RV Loan Interest Calculator with Bi-Weekly Payments

This calculator estimates periodic RV loan payments for a chosen payment frequency, including bi-weekly (26 payments per year). Enter the RV price or financed amount, any down payment, the APR (annual percentage rate), loan term, and an optional balloon/residual payment to see the periodic payment, total paid and total interest.

Results assume a nominal APR with interest applied per payment period (interest_rate / payments_per_year). For accuracy, match the payments_per_year to your lender's schedule (26 for bi-weekly). This tool is intended for planning only and does not replace official loan disclosures.

Updated Nov 7, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record 3ad1377f18ee • Reviewed by Fidamen Standards Committee

Inputs

Results

Updates as you type

Periodic Payment

$230.36

Number of Payments

260

Total Amount Paid (payments + balloon)

$59,892.34

Total Interest Paid

$14,892.34

Loan Principal (amount financed)

$45,000.00

OutputValueUnit
Periodic Payment$230.36USD
Number of Payments260count
Total Amount Paid (payments + balloon)$59,892.34USD
Total Interest Paid$14,892.34USD
Loan Principal (amount financed)$45,000.00USD
Primary result$230.36

Visualization

Methodology

We compute the periodic (per-payment) interest rate by dividing the annual interest rate (APR) by the number of payments per year.

The number of payments equals term in years multiplied by payments per year. If a balloon (residual) payment is present, the formula treats it as the loan's future value and solves for a level periodic payment that amortizes the remaining principal to that future value.

For zero interest rate (0% APR) the calculator divides the principal less balloon evenly across payments to avoid dividing by zero.

Key takeaways

Use payments_per_year = 26 for bi-weekly schedules. Verify payment frequency and APR definitions with your lender.

This tool estimates payments and totals; it is not a substitute for the lender's official amortization schedule or Reg Z / truth-in-lending disclosures.

F.A.Q.

Why use 26 payments for bi-weekly?

Bi-weekly means every two weeks, which typically yields 26 payments per year (52 weeks / 2). Some lenders use semi-monthly (24) instead; confirm with your lender and match the payments_per_year field accordingly.

Does this calculator use APR or an effective rate?

This calculator uses the input APR as a nominal annual rate and divides it by payments per year to form the periodic rate. If your lender quotes an APR that already accounts for fees or uses a different compounding convention, results will differ from the loan disclosure.

How accurate are these results?

This tool provides estimates for planning. Results may vary from your lender's amortization due to rounding, per-period compounding conventions, lender-specific fees, daily interest accrual, or differing APR definitions. See the accuracy and standards citations below.

What should I check on the loan agreement?

Confirm payment frequency, exact APR and whether interest is compounded per payment period, the presence of prepayment penalties, and whether any lender fees are financed into the loan balance. Use the official loan amortization schedule provided by the lender for exact numbers.

Sources & citations

Further resources

Versioning & Change Control

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

Record ID: 3ad1377f18ee

What changed (latest)

v1.0.0 • 2025-11-07 • 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 7, 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 • 2025-11-07 • 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: b9ebef89d353