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How to Use Mortgage Recast vs Refinance Calculator Online for Free: Step-by-Step Guide

Compare recasting a mortgage after a lump-sum payment with refinancing to a lower rate. Free, private and no sign-up.

Saizul Amin
Saizul Amin17 Oct 2026 · Updated 22 Oct 2026 · 4 min read
How to Use Mortgage Recast vs Refinance Calculator Online for Free: Step-by-Step Guide

How to Use Mortgage Recast vs Refinance Calculator Online for Free

Compare recasting a mortgage after a lump-sum payment with refinancing to a lower rate. This guide shows what Mortgage Recast vs Refinance Calculator does, how to use it step by step, what to watch out for, and which related tools on shobfree.com can help next.

Quick answer

Open Mortgage Recast vs Refinance Calculator, type your numbers or pick the options you need, check the result that appears, and then use it. Mortgage Recast vs Refinance Calculator is free, needs no account and runs in your browser, so what you type or add stays on your device.

What Mortgage Recast vs Refinance Calculator does

  • Compare recasting a mortgage after a lump-sum payment with refinancing to a lower rate.
  • Enter your balance, rate and years left, the lump sum you could pay, the recast fee, and a refinance rate, term and closing costs.
  • The calculator shows the new payment and the total interest for each choice so you can compare.

Enter your balance, rate and years left, the lump sum you could pay, the recast fee, and a refinance rate, term and closing costs. The calculator shows the new payment and the total interest for each choice so you can compare.

How to use Mortgage Recast vs Refinance Calculator, step by step

  1. Fill in the boxes. Type your numbers or pick the options you need.
  2. See the result. The answer updates right away as you change a value.
  3. Use it. Copy the result or note it down. Nothing is sent anywhere.

These three steps are the same on a phone and on a computer. If something looks wrong, change one setting and look at the result again; Mortgage Recast vs Refinance Calculator updates as you go.

A worked example

$320,000 left at 6.75% with 27 years to go and a $60,000 lump sum: recasting lowers the payment from $2,149.12 to $1,746.16 for a $500 fee and $306,256 of interest in total. Refinancing the $260,000 plus $6,000 of closing costs at 6.0% for 27 years gives $1,659.80 a month and $271,776 of interest, about $34,500 less.

Tips for a good result

  • Run a best case and a worst case, then keep both numbers for your planning.
  • Change one value at a time, so you can see which input moves the result.
  • Double-check the units and the currency or period before you trust a number.
  • Treat the result as an estimate and confirm important figures with the official source.

Who is this for?

Mortgage Recast vs Refinance Calculator is useful for anyone who needs compare recasting a mortgage after a lump-sum payment with refinancing to a lower rate without installing software or paying for a subscription. Students, freelancers, office staff and small-business owners use tools like this for quick, one-off jobs where a full application would be too much.

Frequently asked questions

Does a recast change my interest rate?

No. Only the payment changes. Your rate and term stay the same.

Which is better if rates have not fallen?

Recast: it lowers the payment without new closing costs. Refinancing only wins when the new rate is clearly lower.

Can any loan be recast?

Many conventional loans can. FHA, VA and USDA loans usually cannot be recast.

Does a lump sum payment reduce the payment on its own?

No. Without a recast the payment stays the same and you pay the loan off earlier.

Do I need to create an account to use Mortgage Recast vs Refinance Calculator?

No. Open the page and start. There is no sign-up, no email and no payment.

Can I use Mortgage Recast vs Refinance Calculator on my phone?

Yes. The page adapts to small screens, and everything runs in your phone's browser, so the same steps work on a laptop or a phone.

Privacy

Mortgage Recast vs Refinance Calculator works inside your browser. Your files, text and numbers are not uploaded to a server, and there is nothing to delete afterwards.

Completely freeNo cost, no sign-up
Files stay privateEverything runs in your browser
Easy in your languageAvailable in many languages