Where Your Instalment Actually Goes in Year One Versus Year Fifteen

An illustrative split of a home finance payment between profit and principal across a long term, and why paying extra early does far more than paying extra late.

On a level-payment home finance, the instalment stays the same but its composition does not: early payments are mostly profit on a large outstanding balance, and late payments are mostly repayment of that balance. That single fact explains why an extra payment in year two is worth far more than the same amount in year fifteen. The figures below are illustrative and rounded to show the mechanism, not a quote; your own schedule comes from your lender.

The situation

A buyer takes a twenty-five year home finance of SAR 1,500,000 on an apartment, with a level monthly instalment of SAR 9,000 for the purposes of this illustration. The buyer expects an annual bonus and wants to understand whether putting part of it into the finance is worthwhile, and whether the answer changes depending on when the extra payments are made.

Assumptions (illustrative)

• Amount financed: SAR 1,500,000.
• Term: 25 years, or 300 monthly instalments.
• Level instalment used throughout this illustration: SAR 9,000 a month.
• Total of all instalments if the schedule runs to term: SAR 9,000 multiplied by 300.
• Assumed outstanding balance after one year in this illustration: SAR 1,470,000.
• An available annual lump sum of SAR 50,000 from a bonus.

Step 1: Total what the schedule asks for

SAR 9,000 multiplied by 300 instalments equals SAR 2,700,000.

Over the full term the buyer pays SAR 1,200,000 above the amount financed. That total, not the monthly figure, is what a long term really buys.

Step 2: Split the first year

Twelve instalments total SAR 108,000. If the balance falls from SAR 1,500,000 to SAR 1,470,000, only SAR 30,000 of that went to the balance.

Roughly SAR 78,000 of the first year’s payments was the cost of carrying the finance. The balance barely moved, which is normal and is why the early years feel unproductive.

Step 3: Compare with a late year

In a late year the same SAR 108,000 of instalments reduces the balance by most of that amount, because the outstanding balance it is charged on is small.

The composition has inverted. By then the finance is nearly repaid, and an extra payment saves very little carrying cost because there is little left to carry.

Step 4: Apply a lump sum in year two

SAR 50,000 applied against a balance of about SAR 1,470,000 removes that amount from the balance for the remaining 288 months of the term.

The saving is the carrying cost on SAR 50,000 for roughly twenty-four years, which is a multiple of the sum itself in this illustration. The earlier it lands, the longer it works.

Step 5: Apply the same lump sum in year twenty

The same SAR 50,000 removes that amount from the balance for only the remaining 60 months.

The saving is the carrying cost on SAR 50,000 for five years instead of twenty-four. The payment is identical; its value is a fraction, because value here is a function of remaining time.

Step 6: Decide between a shorter term and a lower instalment

A partial prepayment can either shorten the term and keep the instalment at SAR 9,000, or keep the term and reduce the instalment. Shortening the term saves more in total; reducing the instalment improves monthly cash flow.

This is a choice, and the contract or the lender’s policy decides which options exist. Ask before you pay, because some lenders apply a default you did not choose.

What changes the answer

• Whether partial prepayment is permitted at all, how often, and with what minimum amount.
• Whether the lender applies a prepayment to shorten the term or to reduce the instalment, and whether you may choose.
• Any administrative cost on a partial prepayment, which can erode the benefit of small frequent payments.
• Whether your pricing can reset, since on variable pricing a prepayment also reduces your exposure to a future rise.
• What else the cash could do, including simply being held as the reserve that prevents a missed instalment.

What the numbers tell you

• Early extra payments are worth a multiple of identical late ones, because the saving is time multiplied by balance.
• The total of all instalments, not the monthly figure, is the number that reveals what a long term costs.
• Shortening the term saves more than reducing the instalment, but it gives you no monthly relief.
• Ask how prepayments are applied before you make one, because the default may not be the option you want.
• A cash reserve that keeps you out of arrears can be worth more than a prepayment that empties it.

Limits of this example

Every figure above is an illustrative assumption used to show the method, not a quote, valuation or market rate. Costs, rates, fees and regulations change and must be confirmed with the relevant authority, lender or supplier before you commit.

Domira works alongside the finance side of a property purchase or a build: the valuation evidence, the cost plan and the construction programme that a lender needs to see. The lending terms come from your bank or finance company, and Domira makes sure the property side of the file stands up.