Using data from the National Survey of Families and Households, an actor-partner interdependence model explored change in the frequency of disagreements and marital outcomes among 796 paired couples, early in marriage. Disagreements about money, time spent together, and the sexual relationship increased over 5 years. Money disagreements predicted disagreements about time and sex for husbands. Spillover findings showed disagreements about money and sex were related negatively to marital satisfaction. Disagreements in all three areas predicted marital instability for husbands, although only disagreements about money and time predicted marital instability for wives. Crossover findings showed husbands’ disagreements about money to be related negatively to wives’ marital satisfaction. Implications of the current findings are discussed.