Depending on which estate planning documents you need, an estate plan may range anywhere from $300 for a living will or between $3,000 and $6,000 for a complete estate plan. The cost of an estate planning attorney will depend on how good your attorney is, how complex your estate plan is, and the number and value of assets you’re putting into your estate plan. If you have a small number of assets or are naming a single beneficiary, your estate plan will be less expensive than if you are naming multiple beneficiaries for numerous assets.