【summary】
Pair Loan is a system in which a married couple or partners each sign a mortgage loan and purchase a home together.
For example, if you want to buy a house worth 40 million yen,
- Husband: Borrowed 20 million yen
- Wife: Borrowed 20 million yen
Take out two mortgages, like this.
It is easier to increase the amount you can borrow than with a single loan, and if the conditions are met, each person may be able to use the mortgage deduction.
However, since there will be two loan contracts, you will also need to consider fees, group trust, divorce arrangements, and the risk of one party's income decreasing.
This article summarizes the general structure as of June 2026. Actual borrowing conditions, group credit, fees, and handling of mortgage deductions will vary depending on the financial institution, contract details, ownership percentage, move-in period, income, housing performance, etc.
Pair loans are convenient, but if you use them without understanding the differences between mortgage deductions, group trusts, name adjustment at the time of divorce, and income aggregation**, you may end up having less freedom in managing your household finances. Please check with your financial institution, tax accountant, real estate company, etc. before signing a contract.
How pair loans work
In a typical home loan, one person is the contract holder.
On the other hand, in pair loans,
- Husband signs a mortgage loan contract
- My wife also signs a mortgage loan.
In this way, you take out two mortgages for the same house.
Generally, each party becomes a debtor on their own loan and a co-signer on the other party's loan. In other words, it's not as simple as ``just pay your own loan and you're done.''
For example, if a husband borrows 35 million yen and his wife borrows 25 million yen, the husband is the debtor of his own 35 million yen, and at the same time may be responsible for guaranteeing the wife's loan. The same goes for my wife.
This is handled differently depending on the financial institution, so be sure to check before signing the contract.
image
住宅価格 6,000万円
夫ローン 3,500万円
妻ローン 2,500万円The equity in a home is also often set based on the percentage of borrowings and the percentage of own funds.
夫 58%
妻 42%If there is a large discrepancy between the equity and the actual burden ratio, it may cause problems in calculating gifts and mortgage deductions.
merit
1. It is easier to increase the amount you can borrow.
For pair loans, the loan will be reviewed based on the income of each couple.
Even if you are unable to afford a property with a single loan, you may be able to increase the amount you can afford by renting with two people.
example
| Item | Single loan | Pair loan |
|---|---|---|
| Annual income | 6 million yen | 6 million yen + 5 million yen |
| Borrowing capacity | Limited | Easy to increase |
| Loan contract | 1 book | 2 books |
However, increasing the amount you can borrow and being able to repay it without difficulty are two different things.
Rather than determining the amount that passes the bank's examination, the decision should be made based on the household's repayment capacity, which includes childbirth, childcare, educational expenses, job changes, and nursing care.
2. Two people may be able to use the mortgage deduction
If the conditions are met, each spouse may be eligible for home loan deduction.
If both of you are working and each pays income tax and resident tax, it may be easier to use the deduction than with a single loan.
However, the treatment of home loan deductions differs depending on the ``borrower,'' ``equity,'' ``actual burden ratio,'' and ``housing requirements.'' It is not a system that says you will always be advantageous if you take a pair loan.
As of June 2026, the Ministry of Land, Infrastructure, Transport and Tourism has announced an extension of the application deadline for housing loan tax reductions for occupancy between January 1, 2020 and December 31, 2020. However, conditions vary depending on energy-saving performance, floor space, income, move-in period, and type of housing.
Furthermore, as a general rule, deductions can be made within the scope of the individual's income tax and resident tax. Even if your loan balance is large, you may not be able to use up the deduction if your tax liability is small.
Let's distinguish between "there is a possibility that two people can deduct the tax" and "it will definitely be a benefit".
3. You may be able to enroll in group credit life insurance.
Depending on the financial institution, each couple can enroll in group credit life insurance (group credit).
Each loan comes with insurance, which can provide peace of mind in the event of an emergency.
However, even if something happens to one loan, the other loan will not be automatically paid off. The scope of coverage differs for each product, such as group loans for pair loans and group loans for married couples, so this is an area that you want to check as carefully as the interest rate.
Disadvantages
1. Increased expenses
With a pair loan, there will be two loan contracts.
Therefore,
- Administrative fees
- Stamp fee
- Registration fee
- Guarantee fee
- Additional costs for group credit and sickness insurance
etc. may increase.
Even if it looks advantageous when you look only at the interest rate, your impression may change when you factor in the initial cost and total repayment amount.
2. Difficult to organize during divorce
The easiest time to get into trouble with a pair of loans is when a divorce or separation occurs.
Even if you divorce, your mortgage contract will not automatically disappear.
- Who will live in the house?
- Who pays the loan?
- Are you going to sell it?
- Can one name be removed?
- How to liquidate the equity
These issues remain.
Even if one party continues to live in the home, it does not necessarily mean that the other party can easily remove themselves from the loan or guarantee relationship. It is more realistic to anticipate the worst-case scenario of selling or liquidating the property before you rent it.
3. May be vulnerable to loss of income
If you borrow a large amount based on the assumption that both of you are working, your repayment plan will be more likely to fall apart if one of your spouse's income decreases.
for example,
- Shortened working hours due to childcare
- Maternity/paternity leave
- Job change
- disease
- Parental care
And so on.
Pair loans seem to be a system that is strong because two people can earn money, but on the flip side, it is also a system that relies on two people earning income.
People who are suitable for pair loans
A pair loan is suitable for families where both spouses have stable incomes and are likely to continue working together in the future.
This is especially an option if you can't get the property you want with a single loan, but there is still some room in your household budget even if you both repay the loan.
As a guideline, the following families are suitable.
| Suitable case | Reason |
|---|---|
| Both husband and wife have stable incomes | It is easy to continue repaying two loans |
| Both have tax amounts that can be used for home loan deduction | There is a possibility that you can take advantage of the deduction benefits |
| You can check the group credit and insurance details for both people | Easy to organize repayment risks in the event of an emergency |
| Even if one of your spouse's income decreases, you have funds to protect your life | Household finances are less likely to be overwhelmed when giving birth, childcare leave, or changing jobs |
However, as the amount you can borrow increases, the purchase price tends to rise as well.
When it comes to pair loans, it is important to consider the amount that can be repaid even if one partner's income decreases, rather than the amount that can be borrowed.
Cases where you are likely to regret taking a pair loan
The easiest thing to regret when purchasing a pair loan is to rely only on the annual household income at the time of purchase.
For example, you should be careful in the following cases:
| Cases that are easy to regret | Problems that are likely to occur |
|---|---|
| Borrow up to the maximum amount you can borrow | You won't be able to afford it when education costs and repair costs increase |
| Not considering income after childbirth/childcare leave | Repayment ratio suddenly increases due to decrease in one's income |
| Not thinking about selling or reorganizing equity at the time of divorce | It's easy to get into trouble over who's living there, who's paying, and who's owning the property. |
| Not looking at the coverage of the group credit | Even if something happens to one party, the full amount may not be paid |
| Determine based solely on home loan deduction | Effects vary depending on tax amount, loan balance, and housing requirements |
Even if you get divorced, your mortgage contract will not automatically disappear.
Who will live in the house, who will pay the loan, and whether the loan will remain even if the house is sold? It's a bit of a heavy topic, but it's better to think about it at least once before renting.
Points to consider from an investor's perspective
Housing is both a consumption and an asset.
When taking out a pair loan, you want to look at not only whether you can get the property you want, but also your household balance sheet.
Avoid unreasonable borrowing
The amount a bank will lend you is different from the amount you can safely repay.
In particular, with pair loans, it is easy to show off your annual household income, which can lead to higher property prices.
The deciding factor is not how much you can borrow, but how much of your take-home income your housing costs will fit.
住居費
= 住宅ローン返済額
+ 管理費・修繕積立金
+ 固定資産税の月割り
+ 駐車場代などIf you judge only by the loan repayment amount without looking at the total amount, your household budget will likely become tight.
Consider future life events
It is best not to decide on a pair loan based solely on the current income of both parents.
- Childbirth
- Childcare leave
- Job change
- Nursing care
- Educational expenses
- Replacement of car
- Repair of housing equipment
When these factors come together, your monthly repayment capacity becomes smaller than you imagine.
At the very least, you want to have enough cash left over to last you for a few months to a year even if one side's income drops temporarily.
Difference between pair loan and income combination
Income summation is often confused with pair loan.
The big difference is whether there are two loan contracts or one loan contract.
| Item | Pair loan | Total income |
|---|---|---|
| Number of loan contracts | 2 | 1 |
| Main form | Two people each borrow | One person's loan is added to the other person's income |
| Home loan deduction | Can be used by two people | Varies depending on contract type and equity |
| Miscellaneous expenses | Tends to be high | Relatively easy to reduce |
| Borrowable amount | Easy to increase | Easy to increase |
| Procedures | Can be complicated | Often simpler than pair loans |
Which one is more advantageous depends on your annual income, equity, personal funds, group trust, future work style, and tax amount.
It is important to compare them not only as a way to increase the amount of debt, but also as a way to share household financial risk.
There are two main types of income aggregation: joint and several guarantee type and joint and several liability type.
| Shape | Rough structure | Points to note |
|---|---|---|
| Joint guarantor type | The loan of one main debtor is examined by adding the income of the other person | Joint guarantors are generally unable to use the mortgage deduction |
| Joint debt type | One loan is repaid by two people | You may be eligible for deductions depending on your equity and contribution ratio |
| Pair loan | Two people take out separate loans | Fees, group credit, and guarantees tend to be the same for two people |
This is where readers are especially likely to stumble.
Although they are similar in the sense of ``combining income between husband and wife,'' the treatment of contracts, deductions, group trusts, and guarantees is quite different.
Common Misconceptions
Misconception 1: It's better to borrow as much as you can.
No.
When house prices rise, not only will loan repayments become heavier, but property taxes, management fees, repair costs, furniture and appliances, and insurance premiums will also increase.
With a pair loan, the amount you can borrow tends to increase, so you need a brake to avoid raising your budget too much.
Myth 2: Renting as a couple spreads the risk
Some will be diversified, but new risks will also be added.
If one party loses income, gets divorced, changes in health, changes jobs, etc., it may be more difficult to organize than a single loan.
Misconception 3: You can make your money back just by deducting the mortgage loan.
The mortgage deduction is a big system, but it's dangerous to make a decision based on that alone.
You need to consider interest rates, fees, group credit, maintenance costs, selling price, and future income changes.
Tax benefits are not a "bonus", but they are also not a reason to justify unreasonable borrowing.
summary
Pair loans have the following advantages:
- Easily increase the amount you can borrow
- There is a possibility that the mortgage deduction can be used by two people.
- Easier to reach the housing you want
on the other hand,
- Divorce risk
- Income reduction risk
- Increased expenses
- Complexity of group trust and guarantee relationships
There is also.
The important thing when buying a home is not ``how much you can borrow,'' but ``how much you can afford to repay.''**
A pair loan is a convenient system, but if you use it when you don't have a lot of room in your household budget, you will be stuck later.
Before borrowing, be sure to check the repayment amount, equity, group credit, mortgage deduction, and arrangements in the event of divorce or sale.
When considering a pair loan, first check not the ``amount you can borrow'' but the ``amount you can reasonably repay.''
It is important to compare interest rates, group credit, and fees at multiple financial institutions and create a repayment plan that takes into account future changes in income.
source
- National Tax Agency “Calculating the amount of borrowing when a jointly owned house is acquired through joint and several debt”
- National Tax Agency "[No.1211-3 If you acquire a used home and use it for residential use after 2020 (special deduction for housing loans, etc.)] (https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/1211-3.htm)";
- Ministry of Land, Infrastructure, Transport and Tourism “Cabinet decision has been made to extend and expand the mortgage tax reduction, etc.!”
- Mitsubishi UFJ Bank “Pair Loan/Income Combined (Home Loan)”
- Mitsubishi UFJ Bank "[What is the mechanism of pair loans? Differences from combined income] (https://www.bk.mufg.jp/kariru/jutaku/column/031/index.html)";
- PayPay Bank “Pair loan/income total”
- Resona Bank "[What is a paired mortgage loan? Differences and advantages and disadvantages from combined income] (https://www.resonabank.co.jp/kojin/column/jutaku/column_0028.html)";