Have you ever wondered whether you should write thus far or so far? Since both expressions refer to everything that has happened up to the present moment, many English learners assume they mean exactly the same thing. While their meanings are very similar, they differ in tone, formality, and the situations where native speakers naturally use them.
Understanding this distinction can instantly make your writing sound more natural and professional. In this complete guide, you’ll learn the meanings of both phrases, compare them side by side, explore grammar rules, discover real life examples, avoid common mistakes, and know exactly which expression to choose in every situation.
What Do “Thus Far” and “So Far” Actually Mean?
Both thus far and so far refer to the period from the beginning of an event until the present moment. They indicate the progress, results, or status of something that is still continuing or has not yet reached its conclusion.
Although they share nearly identical meanings, they create different impressions.
- So far is the everyday expression used in conversations, emails, blogs, news articles, and most informal writing.
- Thus far is more formal and often appears in academic papers, legal documents, government reports, research articles, and business communications.
Think of them as two different ways to express the same timeframe but with different levels of formality.
Quick Definition
| Phrase | Meaning | Common Tone |
| So far | Up to this point | Neutral, conversational |
| Thus far | Up to this point | Formal, professional |
Thus Far vs So Far
Although these phrases share the same basic meaning, choosing the right one depends on your audience and writing style.
| Feature | Thus Far | So Far |
| Meaning | Up to this point | Up to this point |
| Formality | Formal | Neutral |
| Spoken English | Rare | Very common |
| Academic Writing | Excellent | Acceptable |
| Business Reports | Common | Common |
| Casual Conversation | Unnatural | Best choice |
| Text Messages | Avoid | Perfect |
| Blogs | Sometimes | Preferred |
| Emails | Formal emails | Everyday emails |
Quick Rule
Use so far when speaking or writing casually.
Use thus far when writing formally or professionally.
Thus Far vs. So Far: Side by Side Comparison
Seeing both expressions in identical situations makes the difference much easier to understand.
| Casual Version | Formal Version |
| So far, sales have increased. | Thus far, sales have increased. |
| So far, no issues have appeared. | Thus far, no issues have emerged. |
| We’ve completed half the project so far. | Thus far, the project is fifty percent complete. |
| So far, everyone agrees. | Thus far, unanimous agreement has been reached. |
| So far, everything is working. | Thus far, all systems remain operational. |
Notice that the meaning barely changes. The difference lies mainly in the tone and style.
The Key Difference: Formality and Tone
Although thus far and so far share the same meaning, they create very different impressions. The biggest distinction isn’t grammar it’s tone.
So far sounds natural, conversational, and friendly. It’s the phrase native English speakers use every day when talking to friends, coworkers, classmates, or family members. Whether you’re sending a text message, writing a blog post, or having a casual conversation, so far almost always feels like the right choice.
On the other hand, thus far sounds more polished and formal. It appears more often in reports, research papers, legal documents, academic essays, government publications, and business presentations. While it isn’t outdated, it is much less common in everyday speech.
Consider these examples:
Casual
- So far, everything has gone according to plan.
- So far, I’ve enjoyed the course.
- We haven’t faced any problems so far.
Formal
- Thus far, the project has achieved all planned objectives.
- Thus far, researchers have found no supporting evidence.
- Thus far, the committee has approved five recommendations.
Both versions are grammatically correct. The choice depends on your audience and the level of formality you want.
Quick Comparison
| Situation | Best Choice |
| Speaking with friends | So far |
| Text messages | So far |
| Emails to coworkers | So far |
| Business reports | Thus far |
| Research papers | Thus far |
| Academic writing | Thus far |
| Government documents | Thus far |
| News articles | Usually so far |
Grammar Rules: Placement, Punctuation & Tense
Knowing the meaning is only part of using these phrases correctly. You should also understand where they belong in a sentence and which verb tenses work best.
Sentence Placement
Both so far and thus far are flexible expressions. They can appear at the beginning, middle, or end of a sentence without changing the meaning.
Beginning of a Sentence
Beginning a sentence emphasizes the time expression.
Examples
- So far, we’ve completed the first phase.
- Thus far, no significant changes have occurred.
- So far, customer satisfaction remains high.
- Thus far, researchers have gathered valuable evidence.
Middle of a Sentence
The phrase can also appear after the helping verb.
Examples:
- We have so far completed five chapters.
- The company has thus far invested millions in research.
- They have so far avoided major delays.
- Scientists have thus far examined more than 500 samples.
This structure is more common in formal writing.
End of a Sentence
Ending the sentence with the phrase sounds natural, especially with so far.
Examples:
- Everything is working well so far.
- We haven’t received any complaints so far.
- The investigation has produced no evidence thus far.
- The proposal has been successful thus far.
Verb Tenses
Present Perfect (Most Common)
Because both phrases describe events continuing until now, they frequently appear with the present perfect tense.
Examples:
- I’ve learned a lot so far.
- We’ve completed three assignments so far.
- Thus far, researchers have published several reports.
- Thus far, the company has exceeded expectations.
Present Simple
Sometimes the expression describes an ongoing condition.
Examples:
- So far, everything looks perfect.
- Thus far, the policy remains effective.
Past Tenses
These phrases can also appear when referring to a point in the past.
Examples:
- So far that day, nothing unusual had happened.
- Thus far in the investigation, detectives had interviewed twenty witnesses.
Agreement with Ongoing Actions
Both expressions suggest that something is still happening or may continue.
For example:
✅ We’ve sold 800 tickets so far.
This implies ticket sales are still continuing.
Likewise:
✅ Thus far, no solution has been identified.
This suggests the search for a solution is ongoing.
Comma Usage with “So Far” / “Thus Far”
One question learners frequently ask is whether these expressions require commas.
The answer depends on where the phrase appears.
At the Beginning
When either phrase begins a sentence, a comma is usually recommended.
Examples:
- So far, everything has been successful.
- Thus far, no evidence supports the claim.
- So far, we’ve avoided major mistakes.
- Thus far, all deadlines have been met.
This comma improves readability by separating the introductory phrase.
In the Middle
When the phrase appears inside the sentence, commas are usually unnecessary.
Examples:
- We have so far completed four chapters.
- The researchers have thus far collected reliable data.
Adding commas here often makes the sentence feel awkward.
Incorrect:
- We have, so far, completed four chapters.
While not impossible, this punctuation is rarely needed unless you’re intentionally adding emphasis.
At the End
No comma is needed when the phrase finishes the sentence.
Examples:
- Everything has gone smoothly so far.
- No serious issues have appeared thus far.
- We’ve reached our goals so far.
- Sales have increased significantly thus far.
Are “Thus Far” and “So Far” Grammatically Interchangeable?
In most situations, yes.
Since both phrases mean up to this point, replacing one with the other usually doesn’t change the meaning.
For example:
- So far, no mistakes have been found.
- Thus far, no mistakes have been found.
Both sentences communicate exactly the same idea.
However, grammar isn’t the only consideration. Style matters too.
When They Can Be Interchanged
The following sentences work equally well with either phrase:
- We’ve received excellent feedback.
- The project remains on schedule.
- No significant changes have occurred.
- Customer satisfaction has improved.
- The weather has been pleasant.
Simply replace one phrase with the other depending on the desired tone.
When They Shouldn’t Be Swapped
Sometimes replacing so far with thus far sounds unnatural because the conversation is casual.
Casual Conversation
Natural:
- So far, this movie is great.
Awkward:
- Thus far, this movie is great.
Text Messages
Natural:
- So far, everything’s fine.
Unnatural:
- Thus far, everything’s fine.
Academic Paper
Acceptable:
- Thus far, previous studies have produced conflicting results.
Less formal:
- So far, previous studies have produced conflicting results.
While both are correct, academic readers generally expect the more formal wording.
Tone Matters: Choosing the Right Phrase for Your Audience
Good writing isn’t just grammatically correct it matches your audience.
Imagine you’re writing three different documents.
A text to your friend
“So far, the concert has been amazing.”
Perfect.
A company progress report
“Thus far, the implementation phase has remained within budget.”
Professional.
A university research paper
“Thus far, existing literature has not addressed this issue comprehensively.”
Academic.
Choosing the appropriate tone helps your writing sound natural instead of forced.
Who Prefers What?
Different audiences naturally expect different language styles.
| Audience | Preferred Expression |
| Friends | So far |
| Students | So far |
| Bloggers | So far |
| Journalists | So far |
| Teachers | Either |
| Researchers | Thus far |
| Lawyers | Thus far |
| Government Officials | Thus far |
| Business Executives | Thus far in reports, so far in conversation |
Common Mistakes People Make With “Thus Far” and “So Far”
Even advanced English learners occasionally misuse these phrases. Here are the most common mistakes and how to avoid them.
Using “Thus Far” Just to Sound More Intelligent
Some writers believe that formal words automatically improve their writing.
Example:
“Thus far, I like this pizza.”
Although grammatically correct, it sounds unnecessarily formal.
Better:
“So far, I like this pizza.”
Use thus far only when the context genuinely calls for a formal tone.
Using “So Far” in Highly Formal Reports
While so far is acceptable almost everywhere, highly formal documents often benefit from thus far.
Example:
Less formal:
“So far, researchers have collected sufficient evidence.”
More appropriate:
“Thus far, researchers have collected sufficient evidence.”
Redundant Phrasing
Avoid combining these phrases with other expressions that already indicate the same time frame.
Incorrect:
- So far until now…
- Thus far up to now…
- So far to date…
Correct:
- So far, sales have increased.
- Thus far, no problems have occurred.
Using only one time expression keeps your writing concise and professional.
Real World Examples in Full Sentences
One of the best ways to understand the difference between thus far and so far is by seeing how they are used in everyday situations. Although both expressions mean “up to this point” or “until now,” the appropriate choice depends on the context and the level of formality. Below are examples from different real-world settings to help you choose the right phrase naturally.
Everyday Conversation
In casual conversations, so far is almost always the better option. It sounds natural, friendly, and conversational, making it the phrase native speakers use in daily life.
Examples
- So far, my weekend has been relaxing.
- I’ve enjoyed the concert so far.
- So far, we haven’t had any problems with the new software.
- My driving lessons have gone well so far.
- So far, everyone seems happy with the decision.
- We’ve only visited two museums so far, but we’re planning to see more tomorrow.
- So far, this book has been very interesting.
- I haven’t received any replies so far.
These examples sound smooth and natural in spoken English. Replacing so far with thus far would make the sentences sound unnecessarily formal.
Workplace Communication
The workplace is a mix of formal and informal communication, so both phrases can be appropriate depending on the situation.
Informal Workplace Conversations
When talking with coworkers or sending quick messages, so far is preferred.
Examples
- So far, the client seems satisfied with our proposal.
- We’ve completed three tasks so far.
- So far, everything is running according to schedule.
- The meeting has been productive so far.
Formal Reports and Presentations
For reports, presentations, or executive summaries, thus far creates a more professional tone.
Examples
- Thus far, the project has remained within its approved budget.
- Thus far, customer satisfaction has increased by 18%.
- Thus far, all milestones have been achieved successfully.
- Thus far, no operational risks have been identified.
- Thus far, the implementation strategy has delivered positive outcomes.
Using thus far in these situations helps maintain a polished and authoritative style.
Academic or Formal Writing
Academic writing often favors precise and formal language. Because of this, thus far is much more common in essays, research papers, dissertations, and scholarly articles.
Examples
- Thus far, previous studies have produced inconsistent findings.
- Thus far, researchers have examined more than one thousand participants.
- Thus far, no convincing evidence supports the proposed hypothesis.
- Thus far, available literature has focused primarily on urban populations.
- Thus far, the experiment has yielded promising results.
- Thus far, scientists have identified several contributing factors.
Although so far would still be grammatically correct, thus far better matches the formal tone expected in academic writing
Online Content and Blogs
Modern websites and blogs usually aim for an engaging and conversational style. For that reason, so far is generally the better choice.
Examples
- So far, this laptop has exceeded my expectations.
- I’ve tested the camera for two weeks so far.
- So far, the software update has improved battery life.
- Readers have shared positive feedback so far.
- So far, this recipe has received hundreds of five-star reviews.
However, blogs covering legal, financial, or scientific topics may occasionally use thus far to sound more professional.
For example:
- Thus far, market analysts have predicted steady economic growth.
- Thus far, clinical trials have shown encouraging results.
Quick Rule to Remember (Easy Memory Trick)
Remembering the difference between thus far and so far doesn’t have to be difficult. A simple memory trick can help you choose the correct phrase every time.
The Simple Rule
Ask yourself:
“Who am I writing for?”
- If you’re writing for friends, classmates, customers, or general readers, use so far.
- If you’re writing for professors, researchers, executives, or government officials, use thus far.
Easy Memory Trick
Think of the first word in each phrase:
- So = Social → Everyday conversations
- Thus = Thesis → Formal and academic writing
Whenever you’re unsure, remember:
Conversation = So Far
Professional Documents = Thus Far
This simple trick works in almost every situation.
Alternatives to “Thus Far” and “So Far”
Repeating the same phrase throughout your writing can make it feel monotonous. Fortunately, English offers several alternatives to thus far and so far. While some synonyms work in both formal and informal contexts, others are better suited to specific situations. Choosing the right alternative helps improve variety and keeps your writing engaging
Neutral Alternatives
These expressions can be used in both casual and professional writing without sounding too formal or too informal.
Up to Now
Up to now is one of the closest alternatives to so far. It simply means until the present moment.
Examples
- Up to now, we’ve received excellent customer feedback.
- Up to now, no major problems have occurred.
- Everything has gone smoothly up to now.
Until Now
Until now emphasizes that something has changed or may change after the present moment.
Examples
- Until now, I had never visited Japan.
- Until now, the system has worked perfectly.
- We’ve had no complaints until now.
Up to This Point
This phrase works well in both formal reports and general writing.
Examples
- Up to this point, the project has remained on schedule.
- Up to this point, researchers have identified five possible causes.
- Up to this point, sales have exceeded expectations.
At This Stage
This expression is especially common in project management and business communication.
Examples
- At this stage, we don’t need additional funding.
- At this stage, everything is progressing as planned.
- At this stage, no changes are necessary.
Formal Alternatives
If you’re writing a report, research paper, legal document, or official communication, these expressions provide excellent alternatives to thus far.
To Date
One of the most common formal substitutes.
Examples
- To date, no evidence has contradicted the findings.
- To date, researchers have interviewed more than 500 participants.
- To date, the company has exceeded its annual targets.
As of Now
This phrase is common in official announcements and business updates.
Examples
- As of now, flights are operating normally.
- As of now, no additional information is available.
- As of now, the policy remains unchanged.
At Present
A highly professional expression often found in reports.
Examples
- At present, the investigation continues.
- At present, customer demand remains strong.
- At present, no final decision has been made.
To This Point
Another excellent formal alternative.
Examples
- To this point, the research has produced encouraging results.
- To this point, the project has remained within budget.
- To this point, no significant delays have occurred.
Informal Alternatives
When speaking with friends or writing casually, these alternatives sound more natural than thus far.
Yet
Although yet has a slightly different meaning, it often replaces so far in negative sentences.
Examples
- I haven’t finished yet.
- We haven’t heard from them yet.
- The package hasn’t arrived yet.
Still
Still emphasizes that something continues to happen.
Examples
- We’re still waiting for approval.
- The issue still hasn’t been resolved.
- They’re still working on the project.
Up Till Now
This is another conversational alternative.
Examples
- Up till now, everything has been perfect.
- Up till now, we’ve had no difficulties.
- I’ve enjoyed every lesson up till now.
FAQs
What does “Thus Far” mean?
Thus far means up to this point, until now, or so far. It is mainly used in formal writing, including academic papers, business reports, legal documents, and official communications.
Example:
Thus far, the committee has approved all proposed changes.
What does “So Far” mean?
So far also means up to the present moment. Unlike thus far, it is commonly used in everyday speech and informal writing.
Example:
So far, I’ve really enjoyed learning English.
Can I use “Thus Far” in casual writing?
Yes, you can, but it may sound overly formal. In conversations, text messages, and blog posts, so far is usually the more natural choice.
Are “Thus Far” and “So Far” interchangeable?
In most situations, yes. They have the same basic meaning, but they differ in tone. Use so far for casual communication and thus far for formal or professional writing.
How do I remember which one to use?
A simple memory trick is:
- So = Social → Use so far in conversations and everyday writing.
- Thus = Thesis → Use thus far in academic, legal, or professional documents.
Conclusion
Although thus far and so far both mean “up to this point” or “until now,” choosing the right phrase depends on the tone of your writing. So far is the preferred expression for conversations, emails, blogs, and everyday communication because it sounds natural and friendly. Thus far, however, is ideal for formal contexts such as academic papers, business reports, legal documents, and official publications.
By understanding the differences in tone, grammar, and usage, you’ll be able to communicate more clearly and confidently. Whenever you’re unsure, remember this simple rule: use “so far” for casual English and “thus far” for formal English. Making this small distinction will help your writing sound more polished, professional, and appropriate for your audience