Fidamen

Business Loan Refinance Calculator with Bi-Weekly Payments

This calculator helps business owners evaluate refinancing an existing loan and the effect of switching to bi-weekly payments. It compares periodic payments, total interest, and estimates how long it takes to recover refinance fees (break-even).

Use the simulator to enter your current loan details and a refinance offer. You can select monthly or bi-weekly payment schedules and choose whether to include closing fees in the financed principal.

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

Governance

Record 908b74b4f036 • Reviewed by Fidamen Standards Committee

Side-by-side comparison of your current loan and a proposed refinance. Supports monthly or bi-weekly schedules, optional inclusion of fees in the financed amount, and extra periodic payments.

Inputs

Results

Updates as you type

Current periodic payment

$3,346.56

Refinance periodic payment

$1,222.78

Total interest remaining (current)

$71,269.58

Total interest (refinance)

$67,922.13

Estimated interest savings

$3,347.45

Change in periodic payment

-$2,123.78

Break-even time (years)

0.0543

OutputValueUnit
Current periodic payment$3,346.56USD
Refinance periodic payment$1,222.78USD
Total interest remaining (current)$71,269.58USD
Total interest (refinance)$67,922.13USD
Estimated interest savings$3,347.45USD
Change in periodic payment-$2,123.78USD
Break-even time (years)0.0543years
Primary result$3,346.56

Visualization

Methodology

Payments are calculated using standard amortization formulas: periodic_rate = APR / payments_per_year; payment = (periodic_rate * principal) / (1 - (1+periodic_rate)^-n). For zero-interest scenarios the calculator divides principal evenly over the remaining payments.

When comparing schedules, the tool models true periodic compounding based on selected payments per year (monthly = 12, bi-weekly = 26). One-time fees may be added to the financed principal or treated as upfront costs depending on your input.

This tool provides estimates only. Results depend on accurate inputs and assumptions such as exact lender rounding, day-count conventions, and whether the lender accepts bi-weekly schedules as full independent amortizing payments.

F.A.Q.

Does bi-weekly always save interest?

Bi-weekly payments can reduce interest when they increase the effective number of payments per year (26 vs 12), which lowers outstanding principal faster. Actual savings depend on whether the lender applies payments as independent amortizing installments or simply holds surplus until a monthly payment is due.

Should I finance closing costs into the loan?

Financing fees increases the principal and may reduce short-term cash outlay but increases interest paid over time. Use the include-fees option to see the trade-off and the break-even time before fees are recovered by lower payments or interest savings.

How accurate are these estimates?

The calculator uses standard amortization math but cannot replicate lender-specific rounding, early payment processing rules, escrow, or penalty structures. Treat outputs as high-quality estimates, not guarantees.

What if my current payment frequency is different from the lender's accepted schedule?

Some lenders do not accept true bi-weekly amortization and instead credit 'extra' payments toward principal without changing the scheduled amortization. If unsure, consult your lender and consider inputting the effective payment dynamics manually.

Is the APR used the same as the periodic interest rate?

APR is annualized. The calculator converts APR to a periodic rate by dividing by the number of payment periods per year. APR may also include certain fees; verify whether your APR input is nominal or APR including fees for correct comparison.

Sources & citations

Further resources

Versioning & Change Control

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

Record ID: 908b74b4f036

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: c4b934965eed