Compare the three ways to buy

The payment, the cash to close, and what is left to pay

Cash to Close
Assumption

Assumption only

$1,312/mo
Lowest payment
Down payment
$506,478
Funds due
$519,323
Interest + MI left
$15,230
First ends
Jun 2033
Assumption

Assumption + second

$4,536/mo
+$3,224/mo
Down payment
$56,478
Funds due
$71,720
Interest + MI left
$725,818
First ends
Jun 2033
New loan

New conventional

$3,923/mo
+$2,611/mo
Down payment
$56,478
Funds due
$68,059
Interest + MI left
$743,697
First ends
Jan 2057

Monthly payment

The initial total housing payment for each option.

Assumption onlyAssumption + secondNew conventional
First mortgage$53,521$53,521$503,521
Second mortgage—$450,000—
First P&I$820.45$820.45$3,431.49
Second P&I—$3,223.86—
Mortgage insurance$101.12$101.12$100.70
Taxes, insurance & HOA$390.67$390.67$390.67
Total housing payment$1,312.24$4,536.09$3,922.86

Cash to close

Down payment, closing costs and prepaids, then credits.

Down payment$56,478
Closing costs & prepaids$15,242
Usable credit−$0
Total buyer cash needed$71,720
Earnest money paid−$0
Remaining funds due$71,720
Assumption fee$1,800.00
Credit report$250.00
UMe assumption specialist (1%)$5,599.99
Title & settlement$1,825.00
Recording fee$100.00
Second-loan charges$1,250.00
Home insurance (12 months up front)$2,000.00
Insurance escrow (3 months)$500.00
Property tax escrow (3 months)$672.00
Prepaid interest, first (12 days)$98.71
Prepaid interest, second (12 days)$1,146.58

Prepaids include a year of home insurance up front, three months of taxes and insurance in escrow, and 12 days of interest to the end of the closing month.

What is left to pay

The seller already paid down the early, interest-heavy years.

Remaining first mortgage at closing6 yr 6 moOf the original 30-year loan at 5.61%
Interest already paid$142,129Through Dec 2026
Assumption only · ends Jun 2033$15,230
Assumption + second · ends Jun 2033, second Jan 2057$725,818
New conventional · ends Jan 2057$743,697