Divorce Financial Planning: 6 Common Mistakes to Avoid

Divorce and separation bring enough to think about without financial missteps adding to the strain. The decisions made during this period can have consequences that last long after the paperwork is finalised, but most of the common pitfalls are avoidable... Read more

Claire Marston, author of article about financial planning during separation

Blog13th Oct 2026

By Claire McMahon

Divorce and separation bring enough to think about without financial missteps adding to the strain. The decisions made during this period can have consequences that last long after the paperwork is finalised, but most of the common pitfalls are avoidable once you know what to look out for.

6 common mistakes DURING SEPARATION and how to avoid them

Mistake #1: Making emotional financial decisions

It’s completely natural for emotions to run high during a separation, but decisions made in the heat of the moment don’t always hold up in the long run. Common examples include:

  • Insisting on keeping the family home at all costs, even when it isn’t affordable long-term.
  • Agreeing to terms quickly just to bring the process to an end.
  • Not properly considering whether a settlement is actually affordable once the dust settles.

Taking time to think things through, ideally with objective, professional input, helps ensure decisions are ones you can live with for years to come, not just ones that feel right today.

Mistake #2: Focusing only on today’s assets & OVERLOOKING FUTURE EXPENSES

It’s easy to get drawn into negotiating over what exists right now, the house, the savings, the current investments. But a settlement that only accounts for today’s assets can leave gaps further down the line. It’s just as important to think about:

  • Ongoing income needs.
  • Future expenses, particularly as circumstances change.
  • Retirement, and whether both parties will have enough to live on.

A settlement can look fair on paper today and still leave one party significantly worse off in twenty years.

Mistake #3: Forgetting pensions

This mistake is common enough that it deserves its own section. Pensions are often one of the largest, and most overlooked, assets in a divorce. Their value isn’t always obvious, and their long-term impact is easy to underestimate.

Leaving pensions out of the conversation, or not valuing them properly, can mean one party ends up considerably worse off in retirement, even if the immediate settlement looked balanced.

Mistake #4: Not understanding the tax implications WITH DIVORCE

Dividing assets can trigger tax consequences that aren’t always obvious at the time. This can include:

  • Capital Gains Tax on the transfer of certain assets.
  • Tax implications when investments change hands.
  • Business assets and how their transfer is treated.
  • The timing of transfers, which can materially affect the tax due.

The rules in this area are detailed and depend heavily on individual circumstances, so it’s always worth getting professional tax advice before agreeing to anything involving investments, property, or business assets.

Mistake #5: Delaying financial planning UNTIL AFTER THE DIVORCE IS FINAL

Many people wait until the divorce is legally finalised before thinking seriously about their finances. In reality, starting earlier, even informally, tends to lead to better outcomes. Early planning allows time for:

  • Cash flow modelling, to understand what life will actually look like financially afterwards
  • Scenario planning, so you can compare how different settlement structures would play out
  • Making adjustments before decisions are locked in, rather than after

Mistake #6: Trying to manage DIVORCE FINANCIAL PLANNING alone

Separation involves legal, financial and tax considerations all at once, and very few people have the expertise to navigate all three unaided.

Bringing in the right support, solicitors, financial planners and tax specialists, isn’t a sign of things going badly. It’s one of the most effective ways to protect your long-term interests and avoid the mistakes above.

Final thoughts

Most of these pitfalls come down to the same thing: making decisions without the full picture. Taking the time to plan properly, and bringing in the right expertise at the right time, can make a significant difference to your financial future.

How can AAB help?

At AAB Wealth, we work alongside individuals going through separation and divorce to help them see the full financial picture, not just the assets on the table today. If you’re wondering can a financial advisor help with divorce, our financial planners can help you understand what a settlement will really mean for your future, from valuing and negotiating pensions, to modelling different scenarios and stress-testing affordability, and we work closely with solicitors and tax specialists so nothing gets missed along the way.

Whether you’re just starting to think about your finances or already partway through the process, we can help you make confident, informed decisions. If you have any questions about the common mistakes made during separation or would like to talk to a member of the team to talk through your circumstances, please don’t hesitate to get in contact with Claire McMahon, or your usual AAB Wealth contact.

By Claire McMahon

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