MoneyInstallments
When a qist customer pays more than the qist
His installment is Rs 5,000 and he hands you Rs 13,000. There are only two honest answers, and leaving the extra floating is not one of them.

There are only two honest answers, and he chooses: the extra shortens the plan, or it lowers every remaining installment. Decide it at the counter, write it on the plan the same day, and hand him the new schedule. Money left floating between the two is what turns a good plan into an argument.
The month he hands you more than he owes
His qist is Rs 5,000 and he has paid four of them. Then he arrives in the fifth month with Rs 13,000 in his hand, because a job paid out or a relative helped or the season was kind.
Most shopkeepers take it, say something warm, and write Rs 13,000 on the page. And that is where a perfectly good moment starts going wrong, because the page now says one thing and the plan says another, and nobody has decided which of them is true.
The argument arrives quietly a month later. He thinks he has paid ahead and can skip. You think the plan still runs on the same dates. Both of you are reading the same page and reaching different conclusions, and neither of you is being dishonest.
The fix takes about ninety seconds and it happens while he is still standing in front of you.
It is worth understanding why this moment matters more than its size suggests. An overpayment is the clearest good sign a plan can give you. It means the customer is comfortable, the qist was set at a level he can handle, and he wants the thing finished. Almost nothing else in an installment arrangement tells you that. Handling it badly does not just create a disagreement; it wastes the best information you will get about that plan all year.
Why "I will adjust it later" is the worst answer
It is the most common answer, and it fails in three separate ways.
The first is that it leaves the customer without a plan. The whole value of a qist arrangement to him is that he knows the amount and the date. An unallocated payment removes both, and a man who does not know what he owes at the next date stops treating the dates as real.
The second is that it turns the extra into something he can ask for back. A payment that has not been applied to anything feels, to everybody, like money sitting with you. Two months later, when he needs Rs 3,000, he will ask for it, and refusing will feel to him like you moved his money.
The third is your own record. An amount received against nothing in particular is exactly how a plan's remaining balance and the customer's understanding of it stop matching, which is the same failure that makes a missed qist so much harder to handle than it needs to be.
There is a fourth cost that only shows up over a year. A customer who overpays and gets a vague response learns that paying early achieves nothing in particular, and he stops doing it. Early money is the cheapest money a shop ever receives, and a shopkeeper who handles it well the first time will be handed it again.
The two honest choices
Both are fair, both are normal, and the customer picks. Your job is to state them clearly in two sentences.
The first choice shortens the plan. The remaining balance drops by the extra amount, the installment stays at Rs 5,000, and the plan simply ends earlier. Customers who want to be finished with the whole thing choose this, and most do.
The second choice lowers the installment. The remaining balance drops by the same amount, but it is spread across the months that were already agreed, so every future qist becomes smaller. Customers with tight months, or people who are wary of a bigger monthly commitment, choose this.
Notice that the total he pays is identical either way. Nothing is being gained or given up; only the shape changes. Say that out loud, because a customer who suspects that one option is better for you will pick badly out of caution.
Say a Rs 60,000 plan at Rs 5,000, and he pays Rs 13,000
Made-up figures, chosen to show the shape. Do the same two lines in front of your own customer with his real numbers; it takes half a minute.
Do the arithmetic in front of him rather than promising to work it out later. It takes half a minute, and watching you do it is worth more to him than the answer.
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Which one to offer, and to whom
He chooses, but you can steer, and steering well is part of running plans that finish.
Steering him to the right choice
- Steady income and a long way to run: shorten it
- Uneven months or a past late payment: lower the qist
- A small extra, under half an installment: shorten it
- A very large extra: ask if he wants to finish today
- Two or three payments left: shortening is simpler
- Leaving it unapplied "until next time"
Suggest shortening when his income is steady and the plan has a long way to run. Finishing early is a real relief to a customer, and a plan that ends two months sooner is two months less risk for you as well. Everything that can go wrong with an installment plan gets more likely the longer it runs.
Suggest lowering the installment when his months are uneven, when he has struggled with a payment before, or when the amount was slightly ambitious to begin with. A customer who has already been late once is telling you the qist is a little large for his month, and a windfall is the cheapest possible chance to correct that without anybody losing face.
There is one situation where you should say plainly what you prefer: when the remaining plan is short. If he has three payments left and hands you most of one, shortening is simpler for both of you and lowering just creates awkward amounts. Say so, and let him agree.
Watch the size of the extra as well. A small overpayment, less than half an installment, is usually best treated as shortening, because spreading Rs 1,200 across seven months produces a qist figure nobody can remember. A large one, more than two installments, is worth a slower conversation: a man handing over a third of his remaining balance may actually be trying to finish the plan, and asking him takes one sentence.
Should the price come down because he paid early?
This question comes up, and it deserves a straight answer rather than a mumble.
The price does not change. There is no interest in a qist plan to save by paying early, because there was never any interest in it: the markup, if you added one, was a single amount fixed on the day the plan was made and it is part of the price of the item, exactly like the price of anything else on your shelf. That is how a fair plan is built, and it is the whole logic of building a qist plan that stays fair.
So the honest sentence is short: "The price stays the same. What changes is how long you keep paying."
You may of course decide to give something back as a gesture when somebody clears a plan far ahead of time, and shopkeepers often do. Treat it as what it is: a discount you chose to give, entered as a discount, on the day you gave it. What you must not do is let a vague expectation grow that early payment earns a reduction, because the next customer will arrive expecting it, and you will have quietly created a rule you never agreed to.
Record it the same day, on the plan
The record is the whole difference between a good moment and a bad month.
Settled before he leaves
- The payment entered against the plan, the same day
- The choice he made, written beside it
- A corrected schedule handed over before he goes
- The next amount and the next date said out loud
- "Anything extra you pay is treated the same way."
Settled some other day
- "I will adjust it in the next one."
- The amount written on the page against nothing
- Letting him think the money is sitting with you
- Changing the dates as well as the amounts
- Promising a price reduction you have not decided on
Enter the payment, apply the extra to the choice he made, and produce the corrected schedule while he is there. He should leave your shop knowing the next amount and the next date, and ideally holding something that says so.
If your plans live in an app, this is the easy part. In Wasoolo an extra payment against an installment plan is applied to the plan and the remaining schedule updates, so the customer's own view and yours cannot drift apart. On paper, cross out the old remaining line, write the new one, and put your initials and the date beside it.
Tell him one more thing before he goes: what happens if he wants to do this again. Most people who overpay once will overpay again, and knowing that each extra payment gets the same treatment removes the question entirely. That single sentence is worth more than it sounds, because uncertainty is what makes customers stop paying early at all.
When the extra is really something else
Occasionally the money in his hand is not an overpayment, and it is worth checking before you apply it.
Sometimes it is a separate udhaar balance he wants to clear, and applying it to the plan will annoy him next week when the other balance is still there. Ask which one it is for. Customers who run both a plan and an ordinary khata with the same shop almost always have an intention, and it takes one question to learn it.
Sometimes it is an advance on something he is about to buy, which is a different transaction entirely and should be recorded as an advance, along the lines of taking an advance before you order. And sometimes it is a man trying to close the plan completely, in which case ask him directly whether he wants to finish it today, because that is a good outcome for both of you and it deserves a proper conversation rather than a partial application.
The habit behind all of these is the same, and it is the habit that makes installment selling work at all, whether you offer it alongside ordinary credit as in udhaar or qist on a big item or on its own: every rupee that arrives is applied to something named, on the day it arrives, in front of the person who paid it.
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Common questions
Which option should I recommend when he cannot decide?
Shorten the plan if his income is steady and there is a long way to run, since a shorter plan is safer for both of you. Lower the installment if he has been late before or his months are uneven.
Does he pay less overall by paying early?
No. The total is the same either way, and it is worth saying so plainly, because a customer who suspects one option favours you will choose badly. Only the shape of the remaining payments changes.
Can I give something back when a customer clears a plan very early?
You may, as a gesture you decide on. Enter it as a discount on the day you give it, and do not let it become an expectation, or the next customer will arrive believing it is a rule.
He paid extra and now wants it back a month later. What do I say?
This is exactly what the same-day decision prevents. If it was applied to the plan and he took the new schedule away, the money is not sitting with you, it has already reduced what he owes, and the schedule in his hand shows it.
Should an extra payment change the dates as well as the amounts?
Keep the dates. Customers build their month around them, and changing both the amount and the date at once is how people lose track of a plan that was working.
What if he wants to pay the whole plan off today?
Take it, close the plan properly, and give him something that says it is closed. A completed plan is your best possible outcome, and a customer who finishes one is the likeliest person to start another.