One person needs to save in advance to feel comfortable, and the other gets satisfaction from spending now. They judge the same amount differently because they see money differently.
Their priorities differ more than the amounts do. The same hundred dollars is money to keep for one person and money for a good experience for the other. Neither is being wasteful.
They also see money differently. For someone who sees it as a way to prepare for the future, spending means the money set aside is getting smaller. For someone who sees it as a way to enjoy the present, only saving means putting off enjoyment again and again.
The saver feels their effort is wasted. When money they worked to save is reduced by the other person's spending, they feel they are the only one trying.
The spender feels watched. When they have to explain every purchase, they find explaining more of a burden than spending, and eventually they start spending without saying anything.
An uncertain future bothers some people much more than others. People who need to be prepared become anxious when their savings go down. People who judge by their present situation think things are fine as long as there is no immediate problem.
They also differ in when they want satisfaction. Some put off spending now for a bigger satisfaction later, and others enjoy small satisfactions many times now. Their methods differ, but both are managing their lives.
Instead of arguing about amounts, it works better to divide the money by purpose. Deciding which money is shared and which each person can spend without explaining greatly reduces arguments. The amount each person spends freely can be small.
For big purchases, set a standard in advance. A single agreement to mention anything over a certain amount beforehand means far fewer arguments. If they raise it only after the money is spent, the two of them end up taking issue with each other's attitude rather than the purchase.
The spender starts hiding purchases. Since mentioning spending leads to arguments, they stop mentioning small purchases first, and when the other person finds out later, the hiding becomes a bigger problem than the amount.
Over money, the two of them come to judge each other's character. The saver decides the spender is irresponsible, and the spender decides the saver is stingy. Once they judge each other this way, they apply that judgment even to things that have nothing to do with money.
Couples usually argue about money not because of the amount but because they differ in how much they want to prepare for the future. This difference does not show much from outside, so it is hard to see early in a relationship.
The relationship analysis shows the arguments likely to repeat between the two people, one situation at a time, and suggests rules for that relationship. If someone who worries about the future is paired with someone who wants to enjoy the present, that situation appears, so they can decide in advance how much each can spend freely without either feeling uncomfortable.
This page describes behavior patterns for self-understanding. It is not a medical or psychological diagnosis, and it does not replace professional care. If difficulties persist and disrupt daily life, please seek professional help.
This page covers the type in general. How it actually shows up in your own combination is what the measurement tells you.