Apart from wedding costs, what costs of starting a household are often overlooked?

The most often overlooked costs are those of starting life after the wedding, not the wedding itself. They include the rental and utility deposits, basic kitchen equipment, furniture, a vehicle to get to work, and the first month's expenses before the next salary arrives. There are also costs that appear later, such as health checks, preparing for pregnancy and contributions to both families during festive seasons. List everything together and estimate the total honestly. Then compare it with the wedding budget. If needed, shrink the wedding to protect a calmer start. A household that starts without debt is easier to look after. See family finances.