The Sims 4: Royalty & Legacy introduces a wide range of new systems built around its kingdom theme. After spreading secrets and fueling scandals between dynasties, someone has to take control of the realm, and that’s where your Sim steps in. In this guide, we’ll show you how to customize your kingdom, whether you want to improve your Sims’ daily lives or plunge the world into absolute chaos.

Through features like Noble Decrees and the adjustable Kingdom Tax, players can directly influence how their world operates. From imposing stricter policies to increasing household bills across the realm, these mechanics allow you to shape the social and economic balance of your kingdom. Combined with the ability to assign Kingdom Titles from the Manage Worlds screen, The Sims 4 Royalty & Legacy gives players unprecedented control over their domain.

How to Start Customizing Your Kingdom: Kingdom Taxes and Noble Decrees

The first step is — drum roll — joining the Noble career! But don’t expect to start ruling immediately. At the lower ranks, the kingdom isn’t exactly yours to command, so you’ll need to climb a few levels before gaining access to the tools that let you shape its laws and taxes. All of these features are accesible thought the new thrones available in the expansion.

It’s at Level 5, Opulent Overseer, when your Noble Sim unlocks the first customizable feature: Kingdom Taxes! From this point on, you can decide how heavily to tax your citizens, choosing between several options that directly affect how many simoleons your household earns. Whether your goal is to keep your commoners content or slowly drain their wallets for the sake of royal prosperity is entirely up to you.

Warning: Any Kingdom Tax changes you impose will affect all households in that world — including your own active Sims. If your Noble decides to raise taxes, your other played families won’t be exempt. Make sure you’re ready to deal with the financial consequences before tightening the royal purse strings!

The available Kindgom Taxes options and their official descriptions are:

• Very High: Noble Salaries and Household Bills in the region increase by 20%. All Noble families gain Royal Favor over time.
• High: Noble Salaries and Household Bills in the region increase by 10%. All Noble families gain Royal Favor over time.
• Normal: Noble Salaries in the region and Household Bills will be normal, neither increasing nor decreasing.
• Low: Noble Salaries and Household Bills in the region decrease by 10%. All Noble families gain Commoner Favor over time.
• Very Low: Noble Salaries and Household Bills in the region decrease by 20%. All Noble families gain Commoner Favor over time.

The next feature unlocks at Level 7, Influential Liege, when your Sim gains the ability to issue Noble Decrees. These function similarly to the Neighborhood Action Plans from The Sims 4: Eco Living, but with one key difference: their effects apply to the entire world and are not subject to public voting.

You can have up to three active Noble Decrees in your kingdom at the same time, with a total of eight different decrees available to enact.

• The Cradle Accord:
  • Higher chance for a pregancy to result in twins / triplets.
  • Skill gain for Infants and Toddlers.
  • Try for Baby has an increased chance of resulting in pregnacy.
• The Artisan’s Proclamation:
  • Skill gain for Painting, Photography, Guitar, Piano, Violin & Writing.
  • Busking gives more Simoleons.
  • Career Performance increase for Entertainer, Painter & Writer.
  • Skill gain for Singing & Career Performance gain Art Critic. (City Living)
  • Career Performance gain Actor. (Get Famous)
  • Skill gain Cross-stitch. (Cottage Living)
  • Skill gain Pottery & Tattooing. (Businesses & Hobbies)
  • Skill gain Pipe Organ. (Vampires)
  • Skill gain Knitting. (Nifty Knitting)
• The Silver Charter:
  • Elders have inscreased skill gain.
  • Elders Woohoo-ing have no chance of death from overexertion.
• The Verdant Accord:
  • Increased rate of plant growth
  • An increased chance to find rarer frogs, crystals , metals and fossils.
  • Bigger, rarer and more fish when Fishing.
• The Doctrine of Vitality:
  • Sims in the Kingdom will gradually increase their Fitness skill.
  • Career Performance increase for Athlete.
  • Career Performance gain Doctor. (Get to Work)
• The Edict of Enlightenment:
  • Sims will finish homework and school projects faster.
  • Easier to achieve good grades in Schools.
  • Sims will complete Presentations & Papers faster. It will also be easier to achieve good grades at University. (Discover University)
• The Culinary Edict:
  • Foods and Drink created in the Kingdom will be higher quality, including food sold at market stalls.
  • Career Performance increase for Culinary.
  • Career Performance gain Food Critic. (City Living)
• The Technorats Mandate:
  • Skill gain for Handiness, Logic, Rocket Science & Programming.
  • Career Performance increase for Tech Guru & Astronaut.
  • Career Performance gain Scientist. (Get to Work)
  • Skill gain for Robotics & Career Performance gain Engineer. (Discover University)

As you can see, there is a wide variety of Noble Decrees your Sim can ordain, each one offering meaningful advantages for your gameplay. Unlike similar systems in other packs, such as Eco Living, these decrees don’t restrict your Sims’ daily lives or force them into specific behaviors. Instead, they focus on boosting opportunities: faster skill gain, improved career performance, better-quality crafted items, and even smoother progress toward completing collections. Some of them can even help your Sims avoid death itself.

Customize Noble Titles in The Sims 4 Royalty & Legacy

Beyond Kingdom Tax and Noble Decrees, Sims 4 Royalty & Legacy also lets you fully customize your kingdom’s hierarchy through Kingdom Titles. From Manage Worlds, you can select View Kingdom Management to check the current tax level, active Noble Decrees, and see every noble Sim within that realm. It’s essentially your control panel for how the entire kingdom is structured.

When it comes to Noble Titles, it’s worth remembering that nobility has never been universal. Different cultures and historical periods have used completely different systems. While traditional Europe is often associated with titles like Duke, Count, or King, other regions have had their own equivalents with different meanings and ranks. That flexibility is reflected in the expansion.

You can modify noble ranks from level 1 all the way up to level 10, and each title can be customized separately for masculine, feminine, and neutral versions. There is also an option to apply these changes to all kingdoms in your save. This means you’re not locked into traditional labels; you can adapt your Kingdom Titles to fit a fantasy setting, a culturally inspired monarchy, or even a completely original political structure.

In the end, The Sims 4 Royalty & Legacy brings several ways to personalize our gameplay and gives us new advantages when it comes to telling our stories. They may not be as deep as the systems found in more specialized titles like The Sims Medieval, but they certainly introduce fresh opportunities to create both harmony and chaos—like raising taxes on your poor commoners… and seeing how they deal with it.

How are you customizing your kingdom so far? Let us know in the comments below, and don’t forget to check out our other The Sims 4 Royalty & Legacy guides to make the most of every feature the expansion has to offer!